Kimi wa Amai Amai

English title: You are Sweet Sweet/ Sugar Sweet Sugar

Author: Hanamura Ichika

Genre: explicit yaoi

Themes: romance, high-school life

Volumes: 1

Sinopsis: Kohiwa and Katase fell passionately in love with each other and are having a healthy lovers life. But Kohiwa has been quite insecure from the beginning, Katase will have to reassure his love to make his uncertainties go away.

Sekaiichi Hatsukoi (OVA)

Alternative title: Sekaiichi Hatsukoi - episodes 0 and 12.5
Director: Chiaki Kon

Genre: yaoi
Themes: student life, romance, literature
Episodes: 2

Sinopsis
Epidode 0: This pilot episode shows in a better way Takano's and Onodera's relationship when they were in high-school and their first meeting. Even though is called "episode 0", it should be watched after watching the first three episodes of the anime to avoid spoilers.

Episode 12.5: Yoshino Chiaki's Case (English subs)