Chubo no Alice: Bokutachi no Renai Jijo

Eita and Reo are a couple of university students studying organic chemistry. One day, Eita gets jealous and loses his temper over Reo's close friendship with a female friend, leading to a big fight. Meanwhile, on campus, a search for a runaway cat begins. As the two search separately around the campus, memories begin to resurface. Reo, who embraces his gay identity without reservation, and Eita, who wants to keep it a secret. Despite being drawn to each other upon meeting, the two struggle to bridge the gap in their values. How did they come together and become lovers? This is a heartwarming pure love story that explores the importance of realizing one's feelings of love.
(Source: Drama-Otaku.com)