Look at this S! Cupid's Prank - Vol. 4 Ch. 34 - I Don't Get It

[MangaDex]

 

[etriuswimbleton]

noooo BITCH nooooo! also i forgot she's actually not a virgin. she having a bit of an identity crisis now. hopefully what happens next would explain how the birthmark affects people growing into adulthood IF shes ever affected. cause if this trully happens, then its likely Chizuru is also affected.