muse ✨'s manga / #outsider pov(2)

After a fight about marriage with his girlfriend that gets him locked out of the apartment, a young man is invited to wait for her in his neighbor's apartment. He discovers that two men are living together next door to him and comes to feel guilty for being afraid to get married when it's pointed out that they're not able to.

An outsider observes changes in Erwin before he became the commander, once he had, and once he'd met Levi. Levi is slightly out of character, but since he's always shown with Erwin - and I imagine he might be softer around him - I bought it.