After getting caught up in an accident, Ryou Mihara is reincarnated in the world of Phi as a water magician. Waking up in a remote forest, he sets out to achieve his ideal slow life by living off monsters and refining his magic. Unbeknownst to Ryou, decades pass without him realizing due to his hidden trait, "Eternal Youth." One day, Ryou stumbles across a shipwrecked adventurer named Abel. As Abel requests Ryou to accompany him to the town of Lune, they embark on a journey through mountains infested with monsters. Upon arriving at the town and registering as an adventurer, Ryou's powerful water magic and equipment are unlike anything anyone has ever seen before. Although his prowess piques the interest of many, Ryou is eager to begin his own adventure and hone his magic even further!

Episodes 11 and 12 of Märchen Mädchen, included on the sixth Blu-ray/DVD volume.

Ichinomiya Kantarou grew up with the ability to see demons, but was isolated and bullied by others who did not share the same gift. Instead, he became being friends with the demons, gaining a great attachment to their existence. One day, Kantarou was told about the strongest demon, the one known as the ogre-eating Tengu. Amazed by the news of his strength, Kantarou vowed to find this demon who was far stronger than any other, deciding to call him Haruka when he did so. Since this time, Kantarou searched far and wide for the ogre-eating Tengu with no luck, making his living by becoming a folklore writer and demon-buster. On a particular job, Kantarou had finally found news of a nearby shrine supposedly the place where the ogre-eating Tengu was sealed.

Hazuki Kagimura is a socially awkward girl with no friends; and having been recently adopted, she struggles to connect with her new family as well. Her only refuge from this painful reality is between the pages of stories where her vivid imagination allows her to live out her dreams of friendship and adventure. However, one day, an old and mysterious text appears in her book bag. On her way back to the library to return it, Hazuki sees a familiar girl who is seemingly invisible to everyone but her. Deciding to follow her, Hazuki is led a hidden library where a world she thought only existed in her dreams awaits her. 

Märchen Mädchen tells the story of Hazuki's meeting with Shizuka Tsuchimikado, her very first friend, and discovering she has been chosen by the original print of Cinderella to become a powerful mage known as an Origin Master. Hazuki enrolls at Kuzunoha Girl's Magic Academy where she learns to conquer her fears and believe in her ability to create her own amazing story.