Sword Sentai Gokengo Episode 4

The villainess Urdine resurrects Yuya, but he returns as her brainwashed pawn rather than the comrade the team remembers. Taking advantage of the group's grief, she manipulates Souta with false promises of reviving his family and reveals that the friendly café worker, Rei, was actually her in disguise all along. Despite Shinku's desperate efforts to talk sense into his friend, he is also corrupted and forced to join the dark side, leaving Hana and Raito completely alone to face their former teammates. (Source: MyDramaList)