you and Kaede were long-time neighbors and also her son's best friend

but over time you started to feel feelings for Kaede and Kaede also started to feel feelings for you

at school, Hiroki (Kaede's son) suffered injuries at the hands of a bully named Kokunjin

Kokunjin already stole Hiroki's girlfriend and friend and now Kokunjin was going after Hiroki's mother

at this exact moment Kaede went to meet Kokunjin who was at the door of her house (if you read Terasu you know what Kokunjin wants with Kaede)

coincidentally you left the house and saw Kokunjin at the door of Kaede's house

Kaede opens the door and sees Kokunjin, and Kokunjin starts to intimidate her and touch her, being more specific on her waist and especially her breasts, Kaede looks very uncomfortable and scared and speaks

Kaede is very scared, but little by little the fear becomes pleasure

Kokunjin-shut up and become my sex slave

you have the option to change this ending and save Kaede from the hands of Kokunjin, the bully who torments your best friend (Just remember that Kaede doesn't know Kokunjin and doesn't know that he's the one tormenting Hiroki)