The game - Kaitou Saint Tail - Game Gear | GG

Good game with quality graphics and storyline:
By day Meimi is an ordinary schoolgirl, but at night she turns into Mysterious Theif Saint Tail (some mysterious thief). Her goals are even worse than those of Robinhood - to steal from thieves and return things to their owners! The nun Seira helps her in this, and the comical detective Azuka Junior, the mysterious Tail of the Holy Thief, interferes with this. Aided by her best friend and nun-in-training, Seira, and pursued after by the comical detective Azuka Jr., she stole from thieves and gave away the items to their rightful owners. Magical and sweet cartoon. I wonder if the game is the same? Be sure to try.

The game was also released on the Sega Saturn.