The opening video and new key visual of "Who Seo He Hotel -Bud-" have been released. A tie-up with the theme song of "Twilight Labyrinth" sung by Minato Fuwa has also been decided.

The opening video and new key visual of "Who Seo He Hotel -Bud-" have been released. A tie-up with the theme song of "Twilight Labyrinth" sung by Minato Fuwa has also been decided.
"Who Seo He Hotel -Bud-" opening video & key visual released!...

The linked article is in Japanese.