Natsuno's mother remarried from Toru's father, but Natsuno has a unique hair. People bother him about it. turo was like the twin brother for Natsuno, Natsuno knew that staying near Toru would make people hate Toru too. He decided to confess his feelings and had sex once with toru and then he would die and he told toru that. then after Toru woke up and found Natsuno beside him he thought he died so he decided to die and stabbed himself. Natsuno did not die when he woke up and found Toro dead he decideto change his hair's color ,he didn't change it before because toru liked it ... then Natsuno decided to die in the memory of the death of Toru ... This is the story as I understood it . sorry for my bad explain and my bad english
I like ch.6's story , it was nice (●'◡'●)ノ