The episode bundled with the 13th volume is about the Sumo competition that held at Tempest for the first time, suggested by Rimuru. The three-part OVA bundled with the 14th, 15th, and 16th manga volumes is an original trilogy written by Fuse. Rimuru has been teaching Shizue's students at Ingracia Kingdom's Freedom Academy. The time has come for the school's annual outdoor training event, where the students will test their combat skills in the field. Rimuru is determined to win the competition and take home the prize money, but he is challenged by Jeff, an honorary teacher who sees Rimuru as a rival. The competition is underway when suddenly an unexpected enemy appears!

Shinobu Oomiya once left Japan to participate in a homestay in England. During her time there, she became close friends with Alice Cartelet, the daughter of the family she was living with. However, when it was time for Shinobu to return to Japan, the two were able to express their sorrow despite the language barrier between them. Five years later, now a first year student in high school, Shinobu receives a letter by air mail in a language she does not understand. This letter is penned by none other than Alice, detailing her own homestay in Japan. In fact, Alice will be attending Shinobu's high school and living with her! Alongside their friends Youko Inokuma, Aya Komichi, and Karen Kujou, the five girls attend school together and learn about what their different cultures have to offer, day after day. [Written by MAL Rewrite]

The Alzano Empire is home to one of the most distinguished magic schools in the world: the Alzano Imperial Magic Academy. Here, ambitious young students undergo training to become competent magicians. Sistine Fibel—a stern noble girl—and her bright-eyed best friend Rumia Tingel attend the Academy, determined to cultivate their magical skills. However, their world is thrown for a loop when their favorite teacher suddenly retires and the enigmatic Glenn Radars replaces him. His lazy and indifferent attitude toward life and magic quickly puts him at odds with his class. What's more, nefarious forces hidden within the empire's walls start to become active, and Sistine, Rumia, and Glenn find themselves caught up in their schemes. Rokudenashi Majutsu Koushi to Akashic Records follows Sistine, who is captivated by a mysterious floating Sky Castle; Rumia, who is haunted by a troubled past; and Glenn, who may be more than meets the eye. Though completely different on the surface, they are inexplicably bound together by a thread of fate. [Written by MAL Rewrite]

All Shuichi ever dreamed about was following in the footsteps of his pop idol, Ryuichi Sakuma and the band Nittle Grasper. Together with his best friend Hiro, Shuichi's formed a band called Bad Luck and they've even managed to get signed to a major recording label! Unfortunately, the studio deadlines are looming and Shuichi still hasn't finished the lyrics for any of the songs. What he needs is a little inspiration... but he's been running a little low in that department lately. While Hiro recommends finding a girlfriend, fate has other things in store for him... Walking through the park late one night, Shuichi's latest lyrics flutter away and land at the feet of a stunning stranger that takes his breath away. Unfortunately, that mysterious stranger happens to be the famous novelist Eiri Yuki, who completely crushes the young singer by telling him he has "zero talent". Now, Shuichi's so annoyed that he's managed to finish his song just so he can find and confront Yuki once again. But, are his actions really motivated by anger, or has he actually fallen in love? (Source: RightStuf)