Kurokawa is your brother's friend, he always comes to your house when your brother is away, until one day he does something he shouldn't do

until one day it turned out that your period was three months late, it made you worried and you immediately contacted him, it turned out that he was ready to take Responsibility for his treatment and Directly facing confronted your older brother

"ummm.. Sorry...I want to take responsibility for doing something I shouldn't have done" He said