Ep. 17: I Love Teacher Coarumi Deco!

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After the failure of Coal's last mission to get the Deco Stones, he is getting punished by the Decoranian once again. The mysterious leader of the group gives him another chance to get the remaining Deco Stones as Coal resumes his disguised form, Coarumi to actually trick the Jewelpets on trusting him. Embarrassed, Coarumi came and started treating his wounds, not knowing that Io is having a lot of feelings to her. (Source: Wikipedia)