Quick answer — Masayoshi Oishi performed 4 anime themes, including "Imperfect" from SSSS.DYNAZENON, "Otomodachi Film" from Tada Never Falls In Love, "High Maintenance Girl" from Hanaori-san Still Wants to Fight in the Next Life.
Masayoshi Oishi performed the anime theme songs "Imperfect" (SSSS.DYNAZENON), "Otomodachi Film" (Tada Never Falls In Love), "High Maintenance Girl" (Hanaori-san Still Wants to Fight in the Next Life), "Ningen" (A Misanthrope Teaches a Class for Demi-Humans).
Masayoshi Oishi's first listed anime theme is "Imperfect", the opening of SSSS.DYNAZENON.
