It is said that Komushi was one of the persons treated very well by Prince Nagaya and when Nagatomi no miyako no azumabito spoke ill of Prince Nagaya in a game of Igo (board game of capturing territory), Komushi got angry and killed him.
子虫は長屋王に恩遇されていた人物の一人で、囲碁のときに話が王のことに及んだため憤激して殺したとなっている。