After Su Yu was struck by lightning while exploring the Abyss, he accidentally ended up in Honkai Impact 3rd as a cat-like Honkai Beast.
During the Third Honkai Eruption, Kiana and the others found him. Later, after Mei lost control, Himeko took him back to St. Freya, where he lived with Kiana and the others.
(This is my first novel, so please forgive my poor writing. The blurb doesn't do it justice, so please check out the story.)
