
Quick answer — Ai Horanai voices Lua in Yu-Gi-Oh! 5D's, Megumi Sagano in School Rumble, Tenin-san in Chi's Sweet Home and 1 more characters.
Ai Horanai voices Lua (Yu-Gi-Oh! 5D's), Megumi Sagano (School Rumble), Tenin-san (Chi's Sweet Home), Sarry (Supernatural: The Anime Series).
Lua is voiced in Japanese by Ai Horanai.