Kisuke decided to leave after being told that they needed to deliberate among themselves and he knew that they'd be making contact with those who were in the seal with Trihexa, 'It should be easier this way. Great Red's timing was really good.', he thought while stepping into the Belial Mansion and making his way straight to Riveria's room.
Before he could reach the room, he already noticed two other presences aside from Riveria and got worried because he knew that his mother would absolutely use Lilith as the translator. After eavesdropping for a bit, he heaved a sigh of relief thinking that he didn't need to resolve any sort of misunderstandings as Sakura was just asking Riveria about herself.
"Good afternoon. It's me." Kisuke let his presence known by knocking on the door a few times.
[Kisuke!] Riveria was the first one who reacted.
Kisuke heard Sakura's chuckle before saying, "Come in. We've been waiting for you."
As soon as he entered, he saw Riveria trying her best to maintain a poker face but with an obvious blush on her face, [What? Did you really miss me so much?]
[I was left alone in an unknown place and I mistakenly raised my voice.] Riveria defended herself with a feigned cough.
"I'm sorry to interrupt your reunion, but will you use the lab to examine her? It's already prepared, but if there's something else you still need, I'll arrange it.", asked Sakura with a grin on her face.
"Whatever you're thinking, it isn't the case."
"There's your bad habit. I know one when I see one."
"I'll use the lab." Kisuke immediately dodged the topic.
Sakura stood up from her seat while chuckling and said, "Well, it'll still be up to you in the end. I'm just here to remind you that I don't care how many of them there are, but I'll have you promise me that whoever you end up with, you'll take full responsibility."
"That's what I intended to do from the start."
"...We'll use the third lab. Follow me."
Kisuke turned to Riveria who was making a confused expression and said, [Yoruichi already told me of what happened, so before anything else, we'll have to examine your condition first. We want to avoid any hidden complications that might bite you in the back in the future.]
[I see. Thank you. Your sister also has been taking care of me. Please give her my gratitude.]
[Sister? Ah... Sister... Yes. Lilith, go play with Kunou-chan first. I'll take it from here.]
Lilith nodded and disappeared with a wisp of smoke. Thanks to that, Riveria forgot Kisuke's weird reaction and marveled at Lilith's ability to just disappear without any noise.
Soon enough, the three of them reached the reserved laboratory and Kisuke began hooking up machines to Riveria while also taking out some of his equipment to aid in the monitoring.
Half an hour later, Kisuke was finally able to piece together Riveria's full condition, "Not giving her the language candy was a good call mom. Her soul was severely weakened and that might have wounded it. Any wounds on her soul in her current state might prove disastrous."
"That's great."
"Well, I asked you in the first place because I knew you'd be able to properly judge the situation. I'll do the necessary adjustments and treatment. It shouldn't take too long before she can safely take it. For now, there's no problem with her taking the antibodies."
The mother and son duo worked in tandem to treat the 'injured' High Elf. While Kisuke's expertise in Souls surpassed everyone, his skill in physical medicine didn't even come close to his mother, who could easily create an almost perfect homunculus with relatively low effort if she really wanted to, 'I should ask her to teach me some things in the future. It'll be useful for my Gigai project... Or maybe I could just leave it to her.'
After a few hours, Riveria was finally feeling a lot better even though the discomfort of her missing Levels kept bothering her, [Say, is it safe to circulate my Magic Power now?]
[You remembered the flow of Magic Power as it left your body, right? It's fine. It'll be good practice, and since there's no impedance of Magic Power here, it should go a lot smoother.]
Riveria tried it out and was instantly shocked at how easy it was for her to manipulate her own Magic Power. It was as if it's an entirely different thing than before, [What's this!?]
[You can think about it as if you've reached Level 10 and the restriction on your Magic Power was completely lifted.]
[Level 10!? Has anyone even reached that high!?]
[According to my calculations, there should be someone from the past, albeit, probably only briefly. But let's set that aside for now.] Kisuke then took out candy and presented it to Riveria, [Take this first. This should give you the ability to understand the languages used here.]
Riveria took the yellow candy and examined it for a few seconds before popping it into her mouth. Since she would need to learn several languages to effectively live in this world compared to the only language used in her original world, as soon as the candy melted in her mouth, a shocking headache almost crushed her consciousness from the sheer amount of data needed to be engraved, [Ugggghh!!!!]
Kisuke supported her shoulders and raised his voice, [Hold on. It should only last for a minute or two.]
After a minute or two, Riveria stopped groaning and was left panting, "How is it?" Kisuke asked in Japanese.
Riveria's eyes widened because the previously unknown language was somehow understandable, "...I'm... fayne..." Her pronunciation was pretty scuffed, but it shouldn't take too long before she got used to it, "...Levil resit was a lot... moar unbeerable."
Sakura and Kisuke helped her exercise her vocals and were surprised by how fast she was able to adapt to the change. Aside from a few hard words, she already sounded like a foreigner that had been speaking Japanese for some time.
"You're good. With this, there should be no problems. Using Japanese for now should be sufficient, you can just practice the other languages sometime later." Sakura commented and was honestly impressed.
Riveria held her forehead and closed her eyes for a moment before saying, "But this is really surprising... To think there's this many languages used in this place..." Shaking her head, she stood up and slightly bowed her head to Sakura, "Thank you for taking care of me these past few days. Without your reassurances, I may have lived in anxiety."
"It's fine. Kisuke was busy with something when you arrived, so it was my responsibility. I'm happy that you're doing fine."
Riveria thanked Sakura again before turning to Kisuke with a playful sneer, "Your sister sounds a lot more pleasant than you."
Kisuke suppressed himself from laughing while Sakura became happy, "My~ I'm happy~! But you don't have to compliment me, dear. I already have a good impression of you."
"Eh?" A bad premonition arrived on Riveria.
"Allow me to formally introduce myself. I'm Sarah Belial of the Belial House, but I use the name Sakura Urahara. I'm this unruly child's mother and you can call me Sakura. Let's get along~!"
"M-mother!?" Riveria exclaimed as her bad premonition became a reality. At the same time, she became incredibly nervous and she might have an idea about why, but she didn't want to actually entertain it. Without knowing what to do, Riveria ended up turning to Kisuke and pinched his side in retaliation, [Why didn't you tell me!?] She ended up using her original world's language.
[Because it seemed amusing?]
[Damn you...] Riveria gritted her teeth and increased the strength of her pinch, but it was obviously doing nothing except making Kisuke laugh further.
"My~ Aren't you two close? Are you perhaps-"
Riveria didn't allow her to finish her sentence and hurriedly took back her hand, "Definitely not! I'm just a friend!"
"But I haven't said anything?"
"Ugghh...." Riveria couldn't say anything to that and could only remorse, 'We're definitely not going into that direction. This should fade away soon.'
Seeing how very teasable Riveria was, Sakura asked half-jokingly and half-seriously, "Kisuke, how about establishing your own peerage and having Riveria-chan here as your first member?"