Resurrection:The Lost Christmas Episode 12

Shuichiro teleports to the crystal tower but not before giving Segai the information he wants as thanks for his service. Meanwhile, Shu finally recognize who Gai is but he tells Shu to rescue Inori before the youngster, who Gai calls "Death", teleports away. As Shu follows them through a portal, "Death" tells Shu he still doesn't remember his past and causes him to remember.