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!

500 years ago in the Tensho Era of Japan, a man was born who defied the will of a demon; a man who had gods of good on his side; a man destined to battle evil....his name was Kabuto. Somehow, Kuroyasya Douki, the vile Black Night Demon, escaped his prison in hell and returned to the earthly plane to wreak vengeance on the family-line of Kabuto. None can escape his deadly magic and masterful skills with the blade; however, the gods of the North, West, East, and South band together to help Kabuto stand for Justice. With the questionable help of a diabolical talking sword that his own father forged, Kabuto may live another day to see his own sons born....

"Beatrice". It is a mysterious power that responds to people’s will and realize all of them. Tokyo Beatrice University Attached High School is the only school that teaches Beatrice called "magic appears in the real world". Yoshimura Mamoru is a high school boy who was saved by Beatrice miraculously when he was a child. At the first day of the school, he meets a girl under the cherry trees on his way to the school. She orders him to go out with her. Her name is Takasu Ayako. She is in the second grade and one year older than him. She is a director of student committee of discipline. Also, she is a granddaughter of a big-name politician, very beautiful, and a genius Beatrician who can even shoot a satellite down. She is called Witch Beatrice or Death Angel in Beatrice, but in fact, she is a pure-hearted girl.

Based on Masuda Kosuke's popular gag manga. Famous for its cynicism and sarcasm. Features omnibus styled 5-minute episodes starring various characters; including historical figures.