Seeing them leave, Sona heaved a sigh of relief, 'He won't be able to touch them easily if he wanted to stab us in the back.' Sona didn't fully believe Cleria's claim and chose to go to a safe side and let her peerage leave first, 'Besides, if he wanted me to die, he only has to wait for Kokabiel to do that. No need for this kind of scheme of getting close by helping.'
Sona went through the barrier and saw the fight between Kokabiel and the rest. As she gets near, she saw Aika suddenly appearing behind Kokabiel and stabbed him in the chest, 'She did it!?'
However, that was only her wishful thinking as Aika was sent flying soon after. Sona panicked and hurriedly conjured a ball of water with her magic in her flight path to cushion her. She sighed in relief after knowing that she succeeded and ran towards her side to check on her.
Aika has multiple cuts all over her body and as a Human, this could prove fatal if not treated immediately. With Sona's Devil's physique, she was able to easily carry her towards Asia's side to heal her.
Sona also saw that Koneko isn't doing great and a certain thought entered her mind, 'These people are important to him... This battle is impossible... Kisuke...'
Kokabiel then revealed God's death. Sona was a bit shock but wasn't affected like those who worked for the Church.
With Kokabiel about to land the finishing blow to them, Aika suddenly threw her knife towards Kokabiel which amused him instead.
'She hasn't given up? I remembered that she has that strange form but from what I heard from Kisuke, she can't do that on her own... What does she plan to do?'
Sona then followed Aika's instruction and received a power-up from Issei. An omnipotent feeling came to her, but she knew that this is just an illusion of a sudden surge of power and might not be enough to defeat Kokabiel.
She was once again shocked when Akeno revealed her Fallen Angel part because she heard from Rias that she really hated that part of her and would rather lose all of her power than to use it, 'Is this also his influence?'
Both of them glanced at each other and had a tacit understanding. Using almost everything they got, they combined their attacks against Kokabiel but to their dismay, he only ripped it apart after taking it barehanded.
The next moment, she saw Kokabiel being sent flying away and Rias' call for Koneko and saw her lying on her own pool of blood, 'No!' She remembered his face again and shouted internally. She wasn't happy at all seeing Kokabiel injured.
But before she could react further, Aika suddenly transformed and her attire change into a black kimono with two-meter long nodachi and attacked Kokabiel, 'She can use it? How?'
Aika was able to further injure Kokabiel but she also took an attack from him resulting in her going through some walls of the school building.
"Aika!" Sona exclaimed and she left Koneko's side and ran towards her, "Aika! Are you alright!?" Sona used her remaining magic to remove the rubble that is pressing on Aika.
"I-I'm fine... Just a little bit dizzy..." Aika stood up with Sona's help and touched her head, 'Feels damp... Crap... I'm bleeding!' She looked at her hand and saw a splash of blood on it.
"You aren't okay at all!" Sona also saw her hand and shouted at her. Sona gritted her teeth and grabbed Aika's face towards her. Meeting her eyes directly, Sona pleaded, "Aika... Take those who are important to you away and escape from this town."
Aika looked at her for a bit before giving her a big smile, "I doubt those important friends of mine would agree to go with me, so no~!" Aika separated from Sona to meet Kokabiel who already closed his wounds using her Holy Power.
Sona stared at Aika's back blankly for a few seconds before understanding what she meant. She clenched her fist and gritted her teeth, 'Where is that bastard when you need him the most?...' But she immediately shook her head the threw those thoughts away, 'No... It's better that he's not here... He might just die with us...'
Aika then faced Kokabiel again despite her bleeding head and even tried to taunt him. When Aika called the name of her Sacred Gear, she was covered by a pillar of red and black light and her nodachi changed into twin swords that Sona saw last time, 'Can she do it?'
Sona intently watched their fight and tried to help Aika but to her dismay, she couldn't find a chance as they are fighting at a very fast pace that she can't even react to. So when Aika's condition suddenly deteriorated and took another strong hit from Kokabiel, she wasn't able to react in time and could only watch her fell and created a crater.
"Aika!" Sona called out for her in worry for the second time today. She tried to catch her fall again by using her magic, but their battle is too fast for her to react and next moment, Aika already laying on the crater, coughing up blood, and trying to stand up but couldn't, 'What to do? What do I do...?' Tears are already threatening to fall from her eyes as she reaches Aika. She noticed that these past few days, all she can remember doing is crying silently so she tried to hold it in. She didn't think that it would be this easy for her to cry as this wasn't the case in the past.
Sona helped Aika stood up while still coughing blood, "What happened? Why did you suddenly start coughing blood?"
"Well... I pushed myself forgetting about the side-effects of that candy..." Aika answered.
"Candy? What candy?"
"It's something Kisuke gave me to forcefully pulls out my potential to fight. And as you might have expected from hearing that, It also damages my body with prolonged use." With Sona's help, they went out of the crater and gathered with the rest.
Aika was still able to joke around but Sona knew from her eyes that there is nothing she can do. She then looked at Kokabiel who started preparing a large scale attack that will annihilate them all. She along with Rias and Akeno put up a barrier to at least resist the gigantic spear of light he is preparing but they doubt if they can even block it for a few seconds, '...Is this the end?'
With their life already in danger, Sona's memories started resurfacing as she reminisces before she dies. From her childhood and how she idolizes her big sister Serafall who saved many and they built the most advanced hospital for everyone to use in her name. How she wanted to chase after her steps and dreamt of creating and building her own facility to help those who are less unfortunate and give them the power to defend themselves so she chooses a school centered around the most popular activity in the Underworld, the Rating Game.
At first, she thought it was easy to do, but as she grows and gets in contact with those who manage the Underworld, the more she understood that they won't easily give power to commoners and only nobles could command a peerage. She felt disheartened but she kept on going because she really wants to become like her sister where she helped everyone regardless of their status. So much so that status doesn't mean to her anymore.
She worked hard so that she could go to the Human World to experience their culture and system where the power is on the common populace instead of few individuals who inherited it from their ancestors. She just wanted to attend the Human world's school and get inspiration from it for her own school and she succeeded by going with Rias who very much wants to escape her family due to her betrothal to Phenex Household.
Her school life isn't exactly fun because she kept focusing on her work and research. But one day, this monotonous and tiring, but fulfilling life ended abruptly by someone's appearance. At first, Sona is only interested in that man's Sacred Gear and evasion abilities and wanted to invite him to her peerage. But each time she tries, she only failed and kept failing until she finally lost a chess match against him.
If she keeps her promise to her family, then she has to take Kisuke as her fiance if no one else manages to defeat her in the game of chess. Not accepting this, she kept challenging him and she repeatedly loses.
She didn't know when, but she started to develop some feeling at some point for Kisuke despite his constant teasing and pissing her off, 'Now that I think about it... Those are actually the fun times... Because of him, I learned how to enjoy life more... I learned how it feels to become a normal girl...' Those thoughts made her tear up, 'Ah... I actually miss those times... Kisuke.'
Putting more Demonic Power to her barrier, Sona gritted her teeth and glared at Kokabiel, 'I shouldn't have run away... I should have followed what I want... At least, that way, I wouldn't have to regret my actions until now... I'm a failure as a Devil... If I'm given another chance, I'll make sure that I won't regret things anymore... If it's really something I want, I won't step on the brakes anymore. After all, I'm still a Devil, a personification of desire... Alas... That won't happen... It's already too late... There's no medicine for regret...' A single teardrop from her eyes went through her face.
Just as Kokabiel was about to throw his spear of light, a bolt of lightning suddenly hit the spot behind them and they all turned around only to be met by a ridiculous sight of a traditional Japanese door appearing out of nowhere with a familiar silhouette behind it.
When Sona saw this, her heart started beating faster and louder and various thoughts went through her mind, 'Is that him!? Why!? Why is he here!?'
The door opened with a bit of smoke and Kisuke came walking out from it with his usual attire of green kimono with a bucket hat and wooden sandals to go along with it while holding his beloved cane. He did a quick scan of the surroundings and looked at Kokabiel, "Thank goodness. Looks like I'm still not late at the party~. Since I'm already here, let's make it, even more, wilder~."
Before he could do anything else, however, Sona left her position and ran towards Kisuke. He thought that she would give him a big hug because she missed him, but contrary to his expectations, Sona sent a punch towards his guts. He froze and didn't evade, 'She's still angry after all.'
Sona is expecting her fist to sink into his stomach but she forgot that Kisuke has an annoyingly tough body and she felt like she hit a few inches thick steel sheet. Sona grimaced in pain and glared at Kisuke while nursing her shaky hands, "What are you doing here!?"
"Well, it seems like some fun and interesting going on here and I thought that I can't miss this," Kisuke answered nonchalantly.
"There's nothing fun and interesting here!!!" Sona frustratedly shouted at him, 'This bastard is going to get killed because something is fun is going on!' Sona still doesn't understand Kisuke's power, and him showing up here only endangered himself, 'Isn't this my chance? I did say to myself that I won't hold back anymore...' She then grabbed Kisuke's face and stared intently on his eyes.
Kisuke was a bit unnerved at her suddenly becoming quiet and staring at him, "What? Did you forget my handsome face? You can stare at it later. I still have some things to de--!?" Kisuke tried to joke his way out, however, before he could even finish his sentence, Sona suddenly closed her eyes and planted her lips on him.