|Affiliation: House of Abe|
Yoshimasa is Masahiro’s father and Seimei’s youngest son. He has a doctorate in stargazing and is an important figure in the onmyou world. He is married to Tsuyuki and has three sons; Narichika, Masachika, and Masahiro.
Yoshimasa is a caring and supportive father. He recognizes Masahiro as the true successor to Seimei and makes excuses for Masahiro. He is proud of all of his sons although he does tend to be more lenient toward Masahiro since Masahiro is not only his youngest child but also has a difficult destiny.