Yuuki Yuuna is a Hero: Churutto!

On August 16, midway through a seemingly endless summer vacation, middle school third-year student Nagara, transfer student Nozomi, classmates Mizuho, Asakaze and their entire class are suddenly transported from their tranquil lives to a school adrift in an alternate dimension. They must survive with the super powers that have awakened within them.

The Muppet Babies (Kermit, Piggy, Gonzo, Fozzy and company) live in a large nursery watched over by Nanny. The babies have active imaginations, and often embark upon adventures into imaginary worlds.

Orphen is a powerful sorcerer who is notoriously lazy. Everything changes when he finds a way to save his sis, who was turned into a dragon during their days at magic academy. Betrayed by friends who refused to help, Orphen will stop at nothing to track her down, even if he has to go it alone.

Nakamura falls for his classmate Hirose instantly, but they've never spoken. Can his bumbling attempts to say hello lead to a real connection?

Dariel, a dark soldier in the demon king's army who cannot use magic, has risen to the position of assistant to the Four Generals with his talent and energy, and has been wielding his skill. However, as soon as the Four Generals are replaced, Dariel is fired from the army. Dariel is devastated, but when he arrives in a human village, he finds that his adventuring skills, which are supposed to be useless to demons, have blossomed! "I was... human?" Dariel decides to spend his second life in this village, and the requests start pouring in! Trouble! False charge! Duel! With his natural skills and the adjusting power that he developed in his old place, the former dark soldier solves them all!