Cencoroll Connect (2019)

Hanging from a rooftop, Tetsu witnesses the arrival of a massive, pale, amorphous creature that pops out of an interdimensional portal over his northern Japanese town. He has his own creature called Cenzo whom he telepathically controls and would rather hide the shape-shifting monstrosity from his people. Soon enough Cenzo comes into the attention of curious classmates Yuki and Shu, a boy with two such entities at his command.