Koibito Ijou No Koto Wo, Kanojo Janai Kimi To.

Description :

Having to deal with his abusive boss day after day while working an exploitative job, Yamase Fuyu has become tired of it all… Until one day he accidentally runs into Minase Ito, his ex-girlfriend from university.
The sudden reunion lifts Fuyu’s spirits, who wastes no time inviting Ito to chat over drinks. The two have a whale of a time sharing gripes and reminiscing about the past. But just as Fuyu begins to appreciate their new relationship as "just friends," they end up spending an intimate night together…