Ai scores a “Wonder Egg” from a gachapon machine at a deserted arcade. But now when Ai falls asleep a girl emerges from her Wonder Egg, the worlds of dreams and reality begin to collide. And it’s all connected.

https://www.animenewsnetwork.com/enc...e.php?id=23787


Wonder Egg Priority just came out. Don't know anything about it, and usually don't watch this kinds of anime, but so far I've seen plenty of positive reactions to it, so might be worth checking out.