Kamen Rider Den-O Episode 10

Ryotaro comes to believe that the gold Imagin is a good person, but the Rhino Imagin attacks again. Ryotaro discovers that Kikuchi is the contractor for Rhino Imagin, who completes his contract after confronting Honjo. Rhino Imagin travels back to the date of the karate tournament when Kikuchi won by default. In the midst of the fight, the gold Imagin arrives to save Honjo and Kikuchi at the cost of his life. To save the Imagin's life, Ryotaro allows him into his body.