Gozen 0-ji no Amai Wana

Overview

When Kouki enters university, he reunites with his best friend from junior high school, Rei, and ends up sharing a room with him. Kouki, a lazy guy, is pampered by Rei, who takes care of him without a single grimace. For Rei, a former bullied kid, Kouki is a hero who saved him from rock bottom. Kouki, of course, considers Rei a close friend, but sometimes he's perplexed by Rei's obsessive feelings toward him... (Source: Kaiohsha, translated)

Source: AniList