Hokekyo-kun (ホケキョくん) is a Japanese bush warbler (Japanese nightingale) that belongs to Yayoi Haru.
He is a small bird with green feathers and a white stomach (in anime). He is small around half of Haru's index finger. He usually stays in Haru's room.
- Japanese Bush Warbler is regarded as the harbinger of spring.
- He is the symbol on the sides of Haru's glasses.
- He appeared on Haru's poster in Tsukiuta. Art Book and in 「ツキウタ。春のファン祭り 2014 - Tsukiuta. Haru no Fan Matsuri 2014」 event's logo.
- Hajime and Haru can understand what he says as he shows his deep knowledge about world.