Nabari no Ou (2008)

Season 1: Episode 25

After killing Hattori, Yoite goes into a state of insanity and destroys Hattori's body with his Kira. Meanwhile the Shinra Banshou convinces Miharu to use her powers which results in him growing many times his normal size. Right as things are looking grim, Asahi, Miharu's deceased mother, appears before Miharu in his mind and asks him to suppress the Shinra Banshou. Many days later, Miharu wakes up in a hospital bed safe and sound, only to find out that Yoite has gone missing. Miharu sets out to find, with Tobari's guidance, and ends up at a chapel.