"Bingo~! As expected of the Goddess of Wisdom! You guessed it correctly with just a single try!" Athena is right. Kisuke included some particles that could inhibit Divinity for a short time in the bombs.
These particles came from when he is researching about Medusa's Divinity. Although it did its job of inhibiting Athena's Divinity, it's only for a short amount of time. If she's also in her full strength she can easily bypass this inhibition and that's why Kisuke has to beat her up first. But then again, it's only in its early phase of research and still can be improved drastically, given enough time.
With that said, Kisuke is still cautious of what she can do despite her appearance so he only activated half of the Divinity inhibiting particles in anticipation of her doing it again. But looking at her panicked and fearful expression now, he doubts she still has a card in her sleeves. In fact, he's feeling a little guilty seeing her about to cry. But he won't ever let his guard down for an enemy, 'This is taking too long... I should be done with this or the chances of something going wrong will increase.'
Kisuke used Flash Step to instantly arrive in front of Athena, "Hih!! No! Don't come near me!"
'Hmm? What's up with her? Earlier she acts mature with a high and might attitude, but now things are dire, she's acting like a little girl?' Thinking for a bit, Kisuke thought that threatening her is more effective than forcing her to swallow the pill.
Kisuke smiled and said, "Now then, Athena-chan~. You have two options in front of you."
"A-Athena... chan...?" Athena muttered but she doesn't have any strength or courage to refute him.
"First is you die here..."
Athena audibly swallowed her saliva but it felt painful due to her injuries.
"And the second is you shallow this." Kisuke took out the black pill again.
She didn't want to die so her choice is obvious, but still couldn't take it without asking about it, "W-what is that going to do with me?"
"You'll know once you've done it. So? What is it? I don't have much time. If you don't choose within a few seconds, I'll default your choice to the first one~."
Gritting her teeth, Athena answered, "... I'll swallow it..."
"Good~! Now open up! Ahhh~."
Athena felt uncomfortable with his hand getting near her, but she doesn't have much choice, so she sucked it up, took the pill from his hand with her mouth and swallowed it. She waited for a few seconds but there was no reaction. Even after waiting for a minute or two, nothing happened, 'No response?'
Athena was about to ask about it when she suddenly felt pain, but not from her body. She hurriedly descended to her inner world and was shocked to see that her Divine Core, which is shining brightly until now, has a black snake with a white bone mask coiling around it, "What!?" She tried to grabbed it but her hands went through, though she can touch her own Divine Core. The snake is immaterial. She tried everything to destroy or even just move it but to no avail.
Figuring out that her attempts are futile, she hurriedly surfaced and shouted at Kisuke, "What did you do!?"
"Oh? It a success? Great. I thought that I would still need to do some adjustments, but I guess that snake did most of the small task."
"I'm asking you what did you do!" Although she's shouting with all her might, she still didn't have the courage to approach Kisuke.
"Right... It's effects haven't activated yet... So basically, it's something like this." Kisuke snapped his fingers again and Athena suddenly felt an unbearable pain and something constricting her. She hurriedly took a look at her Divine Core again and noticed that the snake is now trying to crush it, "No!!!"
"Well, something like that~." After saying this, the pain disappeared and the snake stopped constricting her Divine Core.
Athena panted heavily and thought, 'I'm doomed!' She almost wants to cry. She just handed over her life to him. But the light inside her still didn't disappear, 'I should ask father to remove this later.'
Guessing what she's thinking, Kisuke immediately warned her, "That snake won't be visible to anyone else and every time someone inspects your Divine Core, I'll also know about it. And if by chance that someone was able to find it they won't be able to do anything to it... Well, technically they can, but think of it as a password, one wrong input and it'll immediately self-destruct... along with your Core, that is."
Athena's mouth twitches at his words, "Y-you're joking... right?"
Kisuke grinned and replied, "Of course I am~! You're free to ask someone to remove it for you~!"
Athena knew he wasn't joking. Even though she doesn't know if it's really possible to do something like that with her Divine Core, she won't take chances as it is her life which is at stake here, "What do you want with me?"
Kisuke stood up and patted her pants, "Now, now. Don't make a face like that. I won't ask anything unreasonable. And that pill is only for insurance. I already said it. I only need you to answer a couple of questions."
"...Are you serious?" Athena didn't know what facial expression she should be doing now, 'Is my life only worth that much?'
"Yep~! And we can't talk to you like that." Kisuke put forward his hand towards her and cast a healing Kidou to repair some of her injuries.
Athena couldn't feel any ill intent from his technique and just let him be. She was surprised that he also knows an effective healing spell. She then unconsciously examine his spell and found something peculiar about it, "Wait... This doesn't use Mana... not Demonic or Holy... It's a bit similar to Ki... What's this!?"
Kisuke didn't answer her question and just kept healing for an hour until only the major injuries are left. Athena still felt pretty weak, but she can now move properly. She didn't thank Kisuke for the assistance though as she still views him as an enemy. However, she's pretty interested in his 'magic' that she wanted him to keep healing her. Thinking back, those energy blasts he used on her also doesn't use the conventional energy systems, 'Just who the hell is this guy? Where did he come from? I refuse to believe that he's human.'
"Alright, get up. You can heal up on your own later." Kisuke turned around and flattened a part of rubbles before taking out a table and few chairs. After that, he put out various plates of snacks along with several cups of tea. Kisuke sat down on one of the chairs and invited Athena to do the same.
Athena was confused but followed what he wanted regardless. She sat down and looked towards Kisuke, not touching the snacks or the tea in front of her.
Kisuke then donned his Hollow mask again which put Athena into the edge. He pointed his finger outward and used Descorrer to open a pathway towards the Dimensional Gap a few meters away from the table. The next moment, a wild gothic lolita suddenly ran out, sat down on Kisuke's lap and started attacking the snacks on the table.
Athena knew who she is and was surprised by her appearance, "Ophis!?" She thought that Kisuke is just someone who received Ophis' blessing, but it clear that it's more than that based on the way she acts around him.
A few more seconds, Yoruichi went through the pathway while carrying the unconscious Medusa wrapped in a white blanket. Kisuke pulled out a bed from his inventory and set it down a few feet away from the table. Yoruichi put her down on it and set a barrier around her. Yoruichi went back to the pathway and grabbed the token which is protecting the remaining members of the Perseus Clan and set it down randomly before sitting on a free chair herself and started drinking tea.
"Well then, Let's start this~."