Nisekoi Episode 15 English Subbed Episode Title:Three Keys.Episode Description:Finally having recognized Marika, the latter fills in Raku about their childhood days and how she molded herself into being Raku's ideal woman then kissing him on the cheek by surprise. With the existence of three keys further shadowing the true identity of the promise girl — in the midst of the confusion — Marika invites Raku to her home to pay respects to her father.