Magical Girl Tsubame: I Will (Not) Save The World! - Ch. 3 - Apartment:New Knowledge Unlocked!

[MangaDex]

 

[dsssssssssssss]

I love his artstyle! The manga is so good!!

 

[Mangamoz]

That dude is totally there to keep tabs on them under a controlled environment under orders from the evil organization.

 

[potatoawards]

So the seven deadly notions are magical girls that had their hearts shattered
Considering if you join the pieces of the puzzle if forms a girl with a dress and heart theme