After seeing your comment I looked at present Eren again and wow you’re right he does look like a pretty girl with mustache! He looks just like his mom so with long hair he does look like a girl. Everyone likes his mustache but I like him better without it.
Me: what a pretty girl. I wonder who that is. Aside from the mustache that's growing she's really pretty.
Reiner: Eren.(⊙…⊙ )
Me: ..... Ok then, I guess that explains the mustache.