Medusa and Futakuchi-chan - Vol. 3 Ch. 55 - Three Legged Race

[MangaDex]

 

[flannan]

Boy, you should be happy that the girl is comfortable enough with you to do three-legged race together. It's much better than if she went full tsundere.
And you don't have to be so conscious of your height. Not in a world where zashiki-warashi exist.