Uwagaki

Terui Chiaki knows her classmate Ajikawa Yoshio has a crush on her, but she has no interest in him and already has a boyfriend. Their mysterious teacher, Mr. Yamada, proposes an experiment: he creates a copy of Chiaki who knows nothing about her boyfriend. The copy, named Koaki, becomes the focus of Yoshio’s attempts to win her over. After a set period, Koaki and Chiaki will be merged, and whichever love is stronger—Chiaki’s feelings for her boyfriend or Koaki’s for Yoshio—will overwrite the other emotions. Both Chiaki and Koaki expect Yoshio to have no chance, but as the days pass, new feelings begin to emerge.