Ep. 12: Arresta and Plug struggle to recharge Sento and Kenta before a river rescue.

12

Arresta fails to recharge Sento, while Plug is shocked that Kenta has reverted to B rank. Hakone and Iono help Sento recover, but Plug cannot charge Kenta despite the pain, causing him to walk toward the river. Arresta uses a spark trail to guide Sento, who saves Kenta and mentions Jūden-chan to lift his spirits. Plug’s unit combines their plugs to create a giant charger. Sento absorbs excess electricity, regaining his ability to see Jūden-chan, which allows Plug and Arresta to fully charge Kenta. Rona attempts an attack but is stopped by Sento. The group then spends Christmas Day together.