@Katey

What about Bloodmoon Trundle. That seems so easy to do, Trundle as an oni, he already has the club and the fangs plus it's been a minute since he got a new skin. Or maybe you could do a rival skin line consisting of champs based on yokai. (brainstorming; Oni Trundle, Yuki-onna Liss, Tengu Swain, Kamaitachi Kha'zix, Jishin-namazu Tahm Kench)