Aina made his way into Walter Mazzarri's starting XI at the Stadio Ennio Tardini after playing 44 minutes in their opening fixture against Sassuolo last Sunday.
Goals from Kevin Bonifazi, Alex Berenguer and Armando Izzo were enough for Torino to edge their hosts in a five-goal thriller as they made it two wins in a row in the Serie A.
Aina's impressive performance for Torino during last season's loan spell, convinced the Bulls to sign him on a four-year deal in June.
They are second behind Juventus in the Serie A table with six points after two matches.
The 22-year-old will be looking to help Torino maintain their fine start to the season when they take on Lecce on September 14.