Koisuru Heart Ga No To Iu

From Chibi Manga:
Sawa is a representative of the student council and the valedictorian of her grade. A teacher had asked Sawa to persuade Tatsuki who has been ditching school and have not been attending his classes. But when she goes to the Educational Guidance Room to speak with him she sees him fooling around with a girl. She decides to go to his house to talk to him, but he takes her out with him and tells her, “If you want me to attend school, all you have to do is kiss me once” but… At that time she thinks, I will really kiss you !?
Sonna Koi no Hanashi
The popular Saho asks Takita-kun to pretend to be her boyfriend for a month to avoid the soon-to-graduate third year seniors from confessing to her. He agrees on the condition that Saho must not fall in love with him…
Doruchu
Fujishima worries about her future when she hears the sweet sound of a piano playing. It is the annoying Tomonori that is playing…
Seiya no Kiss – The Kiss on Christmas Eve
Yukino goes to a missionary school, and every day leading up to Christmas it is rehearsal for Christmas mass. Yukino is caught sneaking out of mass by Seiya, but instead of turning her in, he takes her on a date through a city in Christmas mood… Who is this Seiya anyway?