Character who appears inUnder Night In-Birth. She is a senior middle school student who is childhood friends withNanase, although they have grown apart as of late. Phonon has an interest in supernatural phenomena and has severalchuunibyoutendencies which is partly how she became an In-Birth. Her real name isYoshiko (良子). She was originally based on the scrapped character idea,Chemeti. JP:Oonishi Saori