Both ML and FL are down bad for each other

Bro is a yandere but go matches his freak and loves all that he does (to the point the ML doesn’t believe it)
I'm not going to wait any longer. The first is the "SAYUKI" series, which is a very popular series in Japan. The two are childhood friends and work in the same building. They usually play the role of good friends, but Sayuki has been in love with Mahito for a long time. Then one day, an incident leads Sasuyuki to discover Masato's "true identity". ......? ("I'm going to thoroughly make