Isekai de Seijo ni natta Watashi, Genjitsu Sekai demo Seijo Cheat de Kanzen Shouri! - Vol. 1 Ch. 1 - The Stranger in the Mirror

[MangaDex]

 

[Bayaya]

If she's fat then I'm an elephant.

 

[Khri_na]

Just how thin do you need to be to not being called "fat"? Skeleton type shit? XD

 

[MisterMango]

Fatties are usually more attractive in manga than IRL, but this is ridiculous!

Also reminds me of Isekai de Cheat Skill.

 

[SilentDan]

OH MY GOD THIS DISGUSTING FAT PIG... I genuinely can't tell the difference except her face is rounder

 

[DementisXYZ]

The anxiety I felt for her for a bit, thinking she might not be able to go back to her grandmother. I felt such relief when she went back through the mirror without trouble.