Mrs. Inui (信司の母) is the young widowed mother of Shinji Inui. She had an unnamed husband who used to partake in rally racing with his AE86, whom passed away later on due to unknown circumstances.

It is unknown whether her (also Shinji's) AE86 is a different car from the one used by her late husband or the same car but later converted for daily use, while still retaining most of its mechanical modification.