S1·E6 Pillar of the King

It's Sugata's birthday today, however he hates this very day. Wako explains to Takuto why and tells him that Sugata also possess a powerful Cybody, but Apprivoising it may put his life in danger. Whilst going to Sugata's home to celebrate his birthday, they're attacked by a mysterious glittering star member, and Sugata ends up doing what Wako feared at most to protect them.