Masaki is a very calm and kind person to anyone he meets. He loves his family more than words can describe and is thankful for the happiness they give him every day. Even though he faces constant judgment from the world around him by being an omega, his husband Hiromu (an alpha) and his children wash away any of his worries. Masaki is almost always smiling and tends to bottle up what he's feeling, but is eventually comforted by Hiromu—the only person that sees a more vulnerable side to Masaki.

They have a two-year-old son named Hikaru and a newly-born daughter named Hinata.