No one important:)'s manga / #tough uke(1)

Kinda confused on whether this is a Japanese manga or a Korean manwha but whatever it’s good Ch.8: not Hugo boss lmaoo that kinda made me think this is a manga because Japan sided with Germany in the war so it would make sense why the uke said it was cool, idk if the Koreans sided with them tho Update: just finished this series and I really liked it