A Chronicle of Bloodshed at the Yuuki Inn

A Chronicle of Bloodshed at the Yuuki Inn (結城亭血風録, Yūkitei Keppūroku) is the twenty-first episode of the original To LOVE-Ru anime.

Summary
Tempted at the prospect of running Earth's only (and potentially universe's best) alien hotel by Mikado-sensei and Kimio, Galaxy Network’s editor, Yuuki decides to give it a try using the old school building. Golden Darkness and Mikan started working at the hotel. At the end, Lala's invention exploded and destroy the hotel, and causing Zastin, Rito and the tiny ninja-like aliens to be in the hospital with Lala and Yami as nurses.