Oji-san wa Kawaii Mono ga Osuki.

By day, Mitsutaka Oji is the handsome, dependable boss everyone admires. By night, he dotes on his favorite mascot, Pugtaro, and indulges his secret obsession with all things cute! He's kept his double life hidden for years—but one unexpected encounter turns everything upside down and forces Oji to face his feelings head-on! (Source: Crunchyroll)