Namaiki.

1) I'm Not Your Steppin' Stone
Construction worker Sakai Kazuya is a 23-year-old man in love. Unfortunately, the object of his affection is the younger sister of Ezumi Masashi, an 18-year-old elite whose house he has been working on. In order to dissuade Kazuya, Masashi lies that his sister is only interested in high achieving men. Masashi offers to tutor Kazuya so he can pass his senior high school exams, but will Kazuya be able to afford his extortive price?

2) Tell Me You Love Me
Masashi's classmate Saitou tries to get between him and Kazuya because he deems Kazuya as being an obstacle to Masashi's success.

Extras) Break Time
Saitou starts dreaming during class.
A Day with the Stupid Couple I
A Day with the Stupid Couple II

3) Lovely
Kazuya insists on taking the exams despite the fact that he is no longer interested in Natsuko. He bans Masashi from seeing him till the exams are over but then Masashi sees Mogi Kousei pulling Kazuya's pants off?! (features Mogi Kousei from Kawaige)

4) Marshmallow Honeymoon
It is summer and Masashi wants to go on a holiday with Kazuya but the latter has work lined up so he can afford the new air-conditioner.