Look at this S! Cupid's Prank - Vol. 5 Ch. 41 - Ways of Expressing Feelings

[MangaDex]

 

[etriuswimbleton]

Ohhh so THIS is the literal tragedy. an actual death. Just when Rin was saying that his mother could've been under the stigma's effect (that would be a horrible thought knowing your mom is lusting on you while taking care of you), I thought his mom would've committed suicide because she couldn't love Rin like a normal child and instead have sexual affectionate feelings for him and it disgusted her so much she'd killed herself.

but an affair with Chizuru's dad? really? Aww...kind of disappointed that would be the answer to Chizuru's "actions" towards Rin. I hope it wouldnt be the case tho.