"So here, use this formula. Yes, yes, Sanada-kun, you're a genius~"
"I-I see… U-Um… S-Senpai…"
"Hmm? Oh, you don't understand this part either? This here, you do it like this, yes, you can solve it like this!"
"S-So that's how you do it… N-No, not that. That's part of it, but…since earlier…w-well…it's been hitting me…"
Although a study session was held in Tsuchiya-senpai's room, I had to deal with various hardships other than studying. The fact that I was in Tsuchiya-senpai's room alone with her was already an ordeal, but she was right up against me and…deliberately hitting me with her b***s.
In addition, even though my rationality was already on the verge of collapse just by touching her mysterious t**s, for some reason she whispered in my ear and taught me how to study. I've never thought of myself as having weak ears, but when senpai whispers in my ear like this…I think it's inevitable that I become weak.
I don't know, I've never been tutored or been to a cram school or anything like that… Is this how tutoring is like?
No, that can't be it! I-I'm sure senpai is just teasing me a bit too much. At any rate, I have to get out of this situation by casually pointing it out!
"Hmm? What's hitting you? What is it, what is it?"
"I-It's…s-senpai's…"
"What's wrong, are you blushing? Did you have a naughty fantasy? You can't~ We're studying right now."
I'm sure she's aware of it. But Tsuchiya-senpai must have seen through my comment and teased me with her index finger on my cheek. W-What are you waiting for, me! I have to tell senpai that this is too much for a serious study session…
"W-Well…b-but…s-senpai's…b*****s are…"
"What's wrong with my b*****s~?"
"W-Well… I-It's hitting me, and… I-I can't concentrate…"
"Oh, I see. You got excited when you felt my t**s hit you~"
"I-I'm not excited!"
"Eh?"
"Huh?"
Of course, I'm excited. I'm really excited. But there's no way I could say in front of her, "I was excited by your b***s!" That's why I tried really hard to look good and pretend like I'd said no once and for all.
But then, senpai's expression changed all at once. Until just now, she was rolling me around on her palm, but when I told her I wasn't excited, she opened her mouth and was stunned.
"W-What's wrong with you, senpai!?"
"... (Sanada-kun is…not excited by my b***s!? I-I can't believe I'm saying this, but if he's not attracted to my b*****s, which can really captivate men to no end, means… Sanada-kun is obsessed with his girlfriend…!? I didn't want to be confronted with such a reality… Ah, I'm done! I have no choice but to force Sanada-kun into s*x…)"
"S-Senpai!?"
"…S-Sanada-kun, let's take a break. Ah, you can lie down on my bed."
"T-There's no way I can!"
"Come on! Please!"
"I don't understand what you mean!"
There's no way I'd be able to do that if senpai suddenly asked me to sleep in her bed! To tell you the truth, I'd love to enjoy her bed too!
I'm sure it would smell great! But then I'd earn the title of pervert!
"Please, Sanada-kun! I won't make you regret it!"
"W-What are you doing!?"
"It's gonna be good!"
"What do you mean, good!?"
"W-Well… I-It's… Erm…"
There was a mysterious momentum earlier, but when I asked her what the good thing was, suddenly senpai toned down. Her mouth is mumbling like she's trying to say something, but… I can't tell what it is!
"…S-Se… W-Well… The good thing is…s-se—"
"Ah, sis… WHAAAAAAAAAA!?"
At that moment, when senpai was about to say something, the door of the room opened and a girl in uniform appeared. The girl was startled by my presence and suddenly started screaming.
"Chi-chan!? W-Why are you here!?"
"I came to pick up something I forgot, so when I went back… I-I can't believe you brought a man with you, Sis! You pervert! Shameless!"
"N-No, you got it wrong. I'm just being tutored by senpai…"
"T-Tutored!? T-That's too naughty! No perverted stuff, it'll be a death sentence!
KYAAAAAAAAA!!!!!!"
"AHHHHHHHHHHHHHHHHH!!!!!!!! Why did things turn like this!!!!!!!!!!!!!!!"
The sisters' screams echoed through the house, creating a chaotic environment. W-What the h**l is this… There's no way I can study.