One day during club activities, the main character Moriya accidentally says, "I want to squeeze Kotori-senpai's huge tits" To these words, Kotori-senpai simply replied, "Okay" and for some reason, we ended up really rubbing it...!

They are senior and junior members of the literature club and this leads them to develop an even closer relationship. "Isn't Senpai a bit to easy..." With that in mind, Moriya did whatever he wanted, but... There is a reason why Kotori-senpai does so...