Multiple Worlds by Leni Skvortsev

Eleven-year-old Lenya Skvorechnikov can be anyone: a taxi driver, a battleship, an unread book, a lonely crab, a sleeping beauty, or even a zombie slayer. All for one reason - to make Lisa, his best friend and desk neighbor, stop sulking and start being friends with him again. Even though the reason for her offense is unknown, it's not that important for our hero: he is ready for any transformation in the name of friendship!
Zhenya Boldt is a young writer from St. Petersburg. He too can transform into anyone. Zhenya writes beautifully, draws, and knows everything about the inner world of children. Illustrator Dina Usmandi brought Lenya and his multiple worlds to life.
For middle school age.