Thread:CureLightning/@comment-26426093-20170321071348/@comment-29268934-20170417143631

Koharu isn't exactly a traitor. She didn't want to leave Four Star but had to due to her family leaving for Italy. She probably would've wanted to continue being an idol and discovered the Venus Ark. Once Elza found her, she agreed to join her so ahe could continue her idol activities. That's what I think happened anyway.