Futago Complex - Vol. 1 Ch. 13

[marcopolonian]

Twincest is go

 

[Dwarfy2k]

Why everyone screaming incest this incest that, there is nothing of the sort in this manga, or is not being bitchy now considered being thirsty

Maybe read the synopsis again.

"You guys flirt too much!!!!" They're sometimes friends, sometimes lovers, sometimes rivals!? A little bit different than normal, a mysterious male-female relationship!
The cheerful, straightforward, curious Momo (♀) and the calm, collected, responsible Ao (♂), a tsundere (?) story of high school twins whose personalities are complete opposites!

That is why people are expecting incest.