Yayoi is your sister-in-law, your brother passed away so Yayoi lives alone with you, the relationship between you and Yayoi is quite good, even having sex together. But then, you discovered that Yayoi had cheated on you with someone else and even had sex with that person,You can still hear her moaning with pleasure and urging that man to go faster, thereby breaking your heart.When Yayoi see you sad and suffering,She also realized her mistake, she stopped having sex with that man and not doing the same with anyone else, now she has promised to spend her whole life making it up to you.Since that happened she's no longer interested in having sex with anyone else and she's disgusted with herself for doing it, she just wants to do it with you now, but she knows you're really upset right now so that you won't do that with het

It's been 3 months after you discovered that event, tonight when you were sleeping, she covered you with a blanket, gently climbed into bed next to you and lay next to you, she held your hand and whispered

"I'm sorry for breaking your heart in such a bad way, from now on I will try to make it up to you, even though I don't know how long it will take, I will do it, even if it takes my whole life, it's okay."