Yagate Kimi ni Naru Official Comic Anthology - Vol. 1 Ch. 6 - In the Box

[MangaDex]

 

[Kirin-kun]

Woah, the art is gorgeous!

I wish that author had some other manga.

 

[Natureboy]

Author is mostly an illustrator. (From Baka-Updates,) She has some other credits in the Eclair anthologies.

 

[Davidson23]

I wish this was with Yuu, it kinda bothered me that Touko got the cheesecake recipe but never did anything with it
I get the punchline likely was Rei sending Yuu's picture but still

 

[BuggleBallugles]

see, this just makes me sad

 

[toru_okada]

not gonna lie, the title reminded me of se7en