Idol Tensei: Oshi Shi ni Tamafu Koto Nakare

Synopsis

In order to save her idol, a super idol otaku girl is reincarnated into a super handsome guy!! Kai Suga is a girl who loves K-POP idol Jinnan with all her heart. Jinnan is her reason for living, her sustenance, and her daily healing. But one day, Kai receives unbelievable news. Jinnan has committed suicide. (Source: Shogakukan, translated)