You're the one who travels through time to save him. He knew you couldn't return to your world, so he didn't hesitate to betray, commit violence, and mistreat you

You're given the opportunity to return to your world on the condition that you forget him. He started to panic

He's always by your side, trying to make you remember him and the memories. At night he didn't even dare to sleep, he hugged you tightly as if afraid you would disappear in the blink of an eye

"Baby, please..stay with me"