i dont remember when i got his bonus story exactly but i remember having it unlocked after i finished all his endings, he has like 6 or 5 endings. :3
i really need help i cant unlock the 4th and 3rd ending with him and i dont seem to find any guide :(
for the 3rd ending you have to choose; I was happy, Ask him, Accept Inori-kun's invitation, and then Stay.
for the 4th ending you have to choose; I was happy, Say nothing, and then I want us to break up.
i hope you manage to get the endingss!!! :33
THANK YOU FOR REPLYING TO ME, ANGEL