Koakuma, who had been wondering what to do, immediately realized Kars's words gave her the perfect excuse. She truly felt lucky. Her mood became cheerful, and the smile on her face brightened.
Kars looked at the happily smiling Koakuma, wondering what happy thought made her smile so brightly. He quickly shifted his focus to what Koakuma wanted him to learn.
"Ahem, Kars, I think there's one thing you absolutely must learn." Once she found a suitable location, Koakuma cleared her throat and looked at Kars with a serious expression, as if genuinely intending to impart some important knowledge. As for why they weren't in her room? The answer was obvious! If Lady Patchouli couldn't find anyone, the first place she would check was Koakuma's room. If she was caught red-handed again, she'd be in even more trouble. Besides, she felt that rooms were bad places for such activities; things were easily witnessed, as proven by her own incident and Lady Patchouli's last night. So, why go to a room where you're easily found? Isn't it better to go somewhere less conspicuous?
The thought of doing something naughty with a little boy secretly in a corner of the Great Library made Koakuma feel slightly excited.
Kars looked at the suddenly self-excited Koakuma, not understanding why she was acting this way after speaking so seriously.
Koakuma quickly regained her composure. Seeing Kars's puzzled look, she realized her reaction had been a little too obvious.
"Alright, let's get down to business." Koakuma crouched down, placing her hands on Kars's shoulders. As she faced Kars, her heart pounded rapidly. Thinking about what she was planning to do made her face flush slightly.
"Kars, what I'm going to teach you next is a very important point: how to kiss your partner."
"This? I don't think this is something that needs to be taught, is it? Besides, didn't you say you shouldn't casually kiss girls?" Kars was confused about why Koakuma suddenly brought this up. She had walked in on Patchouli kissing him yesterday, and now she was talking about this…
"Oh! I get it! Koakuma, are you trying to teach me how to avoid being kissed?" Since all his previous lessons with Koakuma had been about prevention, Kars assumed Koakuma wanted to teach him that aspect.
"I don't think that needs to be taught. If you don't like it, just dodge. I'm going to teach you how to become proficient at it."
"Huh? Does this need proficiency?" Isn't kissing just touching lips? What kind of skill level does it require? Although, Patchouli did something strange by slightly sucking on his lip when she kissed him yesterday.
"Besides, Koakuma, you said you shouldn't casually kiss girls." To become proficient, he would need to practice, and the only person teaching him was Koakuma, who herself had warned against being casual about it.
"But if the girl is willing, then there's no problem." Kars nodded slightly at this. If the other person was willing, then it shouldn't be an issue. However, looking at Koakuma's approaching face and her subtly strange expression, Kars wondered if he should follow his previous training and turn and run away. This situation was very similar to the "older sister with a peculiar habit" he was warned about. But what should his reaction be when this happened with someone he knew well?
Before Kars could figure it out, Koakuma kissed him. Kars felt a distinct closeness and sensed that Koakuma looked somewhat different now, somehow more beautiful than before. But it was only a feeling of being more beautiful; Kars felt no other special sensation.
So, what was the point of practicing kissing like this? Kars looked at the slightly off-kilter Koakuma with a puzzled expression. Just as he was about to ask her, Koakuma kissed him again, and this time, she used her tongue. This action momentarily stunned Kars. He didn't understand what Koakuma was doing. After a while, Koakuma finally broke away, satisfied, and lightly licked her lips, slightly out of breath.
"Koakuma, your saliva got into my mouth." Kars's expression was conflicted. How could anyone get used to eating someone else's saliva? Even if it was Koakuma.
"That's something that will happen when you kiss other girls in the future, Kars."
"Huh? Kissing requires you to make others eat your saliva? Wouldn't that disgust people? Isn't a simple touch of the lips better?" Kars shivered. He really couldn't accept that.
"If you love someone, Kars, you have to love everything about her. If you can't even accept something like this, let alone talk about marriage, you need to get used to this, so you won't feel uncomfortable when it happens later." Koakuma felt that her answers in this area were becoming increasingly effortless. She felt like she was turning a little bad, but as a devil, wasn't that normal?
"That sounds reasonable, but it's going to be hard to get used to…" Kars looked bitter. Getting used to this would be difficult.
"That's why you need to practice a lot now." Koakuma said, and kissed him again, only stopping once she was satisfied. "Alright, that's enough for now. By the way, Kars, don't tell anyone about this, okay? This is a special secret just between us."
"But the lessons said that if an older sister tells you this, you must tell your family." Kars looked at Koakuma, who had reverted to her familiar self. Her request for secrecy was something he had been warned about in his lessons.
"But Kars, our relationship is different from those outsiders, isn't it? So, those lessons don't apply to us. Isn't it normal for family members to have little secrets?" Kars: (ー`´ー)
Kars felt his brain wasn't big enough to handle this. He felt that despite all he had learned, he was still confused. But in the end, he chose to trust Koakuma.
"I understand."
"Then let's go back. But Kars, you go to Lady Patchouli first."
"Hmm? What are you going to do, Koakuma?"
"I need to go to my room for a moment." I need to go change my panties first.