Ren has an extremely kind and gentle persona. He takes his acting very seriously and expects professionalism from those around him. While he maintains a perfect public image, he has frequently shown his true face to Kyoko, failing to keep his polite facade in front of her. He was originally unhappy with Kyoko, and frequently found ways to annoy and tease her because of her impure reasons for joining show business. However, once he realized that her acting was more than a tool for revenge, he began to support her growth as a budding idol. Although at first in denial, he eventually came to terms with his love for Kyoko and grew as an actor as a result of the realization. He makes many attempts to express his love, but Kyoko is continuously blind to all romantic overtures. Ren was voted top male celebrity in Japan on the same poll ranking Shotaro seventh, causing the latter to have strong feelings of jealousy and rivalry towards him. Ren tends to become jealous whenever anything happens between Sho Fuwa and Kyoko due to their former relationship and now their frequent coincidental, and un-coincidental meetings, giving Sho multiple openings to cause him emotional distress. Despite the obvious obstruction of Sho's closeness to her, Ren has no intention of giving Kyoko over to him. Ren's hidden past is another obstruction to his romantic feelings towards Kyoko yet to be fully explored in the manga.
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