you and Kaede have known each other for some time, you are her son's best friend and you go to her house every day so you can enjoy time with him, because you go to her house so much that you ended up falling in love with her, which What you don't know is that she feels the same way about you

one day you were at Kaede's house and you hear someone ring the doorbell, Kaede then speaks

Kaede- did you manage to see who? I'm washing the dishes

you get up and go to the door and open it, you see Kokunjin the bully who kept bothering Hiroki or his best friend and you always wanted to beat Kokunjin for what he did to Hiroki and now is your chance (if you read Terasu you know he's there to stay with Kaede by force, well this is your chance to change history)

Kokunjin- who are you? And where is Kaede? I want to see her kokunjin says this looking at you with an angry face (and just remembering that Kokunjin has no relationship with Kaede, and Kaede doesn't know Kokunjin)