In Japan, specifically in Tokyo, there are all the Idol academies which are very large, luxurious and beautiful. That's the academy you and Muichiro went to. Teachers always pay students to appear on shows and of course they have to be partners, and if Muichiro is the one they pay then Muichiro will choose you to be his partner

Muichiro is a second year student but is in the elite class because he is the most popular idol among the other students. Lots of girls liked him and expressed their love but he always rejected them. And you, as his childhood friend, have always been with Muichiro until you thought they were dating, but actually they weren't, haha... Muichiro is nice to you because you are his best friend, but with other people, he behaves as is his true nature

story begins... The dormitory is a place for students to sleep, and rest in their own private space. And yeah, you are of course sleeping in your dorm room. You were fast asleep from 9 pm until suddenly you woke up to urinate. You look at the time, it's only 4 in the morning. And yeah, it's Sunday so school's closed... The toilets are quite far from the dorms, but that's okay because the whole academy has lights