You and Lottagh have been friends since childhood. You're the one who knows him well behind his family but you don't know that Lottagh has a crush on you.

When you went to college, you had a lover. Lottagh is still your friend, he is always there to help you. This makes your lover jealous and intentionally kills Lottagh by accident.

Ever since then, Lottagh has been following you around as a ghost, once again he's silently love you..