Fuu 2

is a Rank E Ice-attribute Yo-kai of the Brave tribe.

The Yo-kai Medallium bio reads; "A laid-back lion who wants to be a mighty warrior but tends to prioritize naptime above sword practice."

The level that is required to make Lie-in evolve into Lie-in Heart inexplicably varies from the different game series since the line's inclusion. In Yo-kai Watch 2, it was originally set at Lv. 26, with Yo-kai Watch Busters, it was Lv. 30. In Yo-kai Watch: Wibble Wobble, it was Lv. 36, and in Yo-kai Watch 3, it is set at Lv. 35.

Apperance
A little white lion cub with yellow eyebrows to match the inside of his ears. He has a big pale pink nose and cheeks and looks to be crying with eyes always shut. He has pale, ice blue hair that frames his face with solid white highlight on the end. At his neck is ice blue fur to match the little flame on the end of his tail. He wears a pale tan oufit with a burnt-orange sash, dark blue pants to match his wristbands, and yellow sandals. His weapon is in a metallic-red sheeth.

Trivia
Name Origin
 * Lie-in resembles the main protagonist of Kaiketsu Lion-Maru, a tokusatsu show in the 1970's featuring a samurai with a white-furred lion head.
 * "Lie-in" is a pun on lion.and lying in.
 * "Shishimaru" combines shishi (獅子, "lion") with maru (丸), suffix typical of boy names.

In other languages

 * Japanese: 獅子まる Shishimaru
 * Korean: 태사자 Taesaja