Gakkou de Guuzen Onnanoko no "Himitsu" o Shitte Shimatta Ohanashi - Ch. 18 - To Leave a Meal Set Right Before You Uneaten is...

[MangaDex]

 

[xanon]

To leave a meal before you uneaten is a sin only if you have consent.

 

[Kaarme]

I'm not sure this sister truly works as a wingwoman. Maybe a cat like Yonagi won't mind, but some other girl could easily be scared away by such an overbearing and too boldly straightforward person.

 

[blablablub]

Are we sure she's Tanaka's sister? She looks like a carbon copy of Yonagi.