I don't know why Natsume is even entertaining this guy. He's your ex not your father, why the hell do you need his approval for anything. Just tell him to mind his own business and be done with it ┑( ̄Д  ̄)┍
Same, im not sure why he even bothered. He could have just stated to the ex clearly that he didn’t want to talk with him anymore and block his phone number. If he goes to his office then just report him to the security. Case closed.
I don't know why Natsume is even entertaining this guy. He's your ex not your father, why the hell do you need his approval for anything. Just tell him to mind his own business and be done with it
┑( ̄Д  ̄)┍