Twisted Love: Forever And Always

He watched himself kill him a million times. In a handful times he saw them together, he always ends up dying. From gunshots to accidents to diseases. Then he started to treasure him. And he promised to himself that he won't let anyone hurt and take his precious away.

10 years old Byakuran saw a chance when he met the two year old twins Sawada Natsuyoshi and Sawada Tsunayoshi. Deciding he was too old for his precious beloved, he ordered his scientists to make a machine that preserves youth. And he will enter this machine to stop his time. A year later, before entering the machine, he went to visit his beloved. And with a final look, he promised,

"I will come back my love. I will come back to claim you mine."