I Hate (Natsume Kazuki) summary:

“The only taste you need to know, is mine.” A chance reunion after 10 years for Hiro and Kiriya. They were “kiss-friends” only during their last summer of high school. A memory from the past Hiro wants to forget. That, however, even after turning 27, kept binding him to the point he can’t date anyone. Kiriya, on the other hand, kept his cool even after the reunion. But…