Kimi to Kyun Koi, Shiyou.

From Chibi Manga:

I'd like that you feel the same than me...
Five stories about sweet and painful loves.

1. Kimi to Kiss Shitai. by Makino
Sugi-san had witnessed her player classmate Ryou hitting on her homeroom teacher. Sugi hates his type the most, however, he seems to take a liking to her...?!

2. Sensei, Anone. by HARUKI Saki
Yara Ikumi has fallen in love with her sensei! She often tries to confess to him, but he bluntly rejects her. Can she ever succeed in winning his heart?

3. Kanpeki Kareshi Kanojo - Water-Proof Passion by MIYOSHI Maki
Kawahara Natsu thinks that Ichijou is the perfect boyfriend material, so she confessed to him! But he rejected her, saying he wanted someone cuter! What will Natsu do? Keep loving him (a bit delusionally) of course, but will she ever get him to change his mind?

4. Hoshigari na Honey -Saya by KURAMOCHI Mari
Saya is in love with Kudou-senpai, but he sleeps around and never would accept anyone to be his girlfriend. Saya then proposes to him that she will be his friend with benefits. Can Saya stay as a sex buddy, as she falls for her beloved senpai more?

5. Koi, Kakueki Teisha - Secret Train by KITAGAWA Yuka
Chika has had lied that she had a boyfriend to her friends. What will she do? But then, she meets a handsome guy that accidentally hurt her. In compensation, she asked him to be her pretend boyfriend, in which he accepts. Even though they're only pretending, Chika may be falling for him!?