What would you do if your childhood friend suddenly confessed that you were a magical girl?

One day, the main character, Takeshi Azuma, meets his classmate's childhood friend, Ulim Sinclair.
She confesses that she is a magical girl.
Urim, transformed into a magical girl, appears before Mitsutake, who is half in doubt.
And so, Mitsutake was forced to accompany Urim's magic training,
The training written in the magic book was all about naughty content

"It's magic training, so it can't be helped."

- DMM description