Kuranshu in Vampire Knight traveled through time and became Yohji Miyazaki in Toho. When Shinobu Ito woke up to his true feelings, Yohji was no longer the Yohji who loved him before.
This work is a combination of Net King, Toho and Vampire Knight. The main Net King and Vampire Knight appear less likely.
Ps: The male protagonist is Yohji, and Yohji's love interest is yet to be determined. There's no way around it, the heroine's profile is that of Yoji's little friend. (I hope that when the second male lead is chosen, the prince's fans will not beat him up)