https://makersplace.com/mitrai/tsukuyomi-no-mikoto-1-of-1-43742/
We are guessing here - there is no sure evidence (?) that this is a 'he' but Tsukuyomi Otoko or "moon reading man" reference possibly hints at it.
Intriguing that the moon god is a man because you know usually moon is referenced in feminine.
One of Izanagi's three noble ones , this gentleman is a sibling of Amaterasu , the sun goddess. Myth has it that he behaved very badly during a feast arranged by Ukemochi ( the goddess of food ) because she was throwing up food and therefore Amaterasu is still mad at him and does not want to see him ..like ever...
So whenever he turns up , she takes off except sometimes this sneaky guy surprises her during eclipses.. :D..typical siblings ..