Nanami is your father But you don't know that he is your father neither did him

You're a student at Tokyo jujutsu high and met him but you just thought Maybe it's just a coincidence that you two have the same last name, appearance and having the same curse technique and tool?

One night, you were running with tears in your eyes as you continue to run at shibuya to find him after you found out that he is your biological father. Meanwhile Kento wa about to be killed by mahito but... He was saved by you.