[DeepL Translation - needs review] Volume 1: Mizuki, a girl from the U.S. who has lied about her gender to transfer to a boys' school in order to meet Izumi Sano, the man of her dreams. What will happen to her life at the boys' school full of danger?
(Translator: DeepL)
tl;dr: It's a fine continuation of the story, just wish the characters had more depth. And for a series revolving entirely around characters, that does take away quite a bit from the story.
Not tl;dr:
The gang continue their adventures, this time in Hokkaido, and Julia begins to investigate Sano. Just what is his relationship with Ashiya, and why does he seem to act the way he does around her? Could he know her secret?
Some of this in reminiscent of the Hana Kimi Special, if you've seen that.