3rd grade teacher Aoki Daisuke didn't expect the first class he ever taught to be one of the toughest obstacles of his life. After getting off on the wrong foot with the entire class, a moment of kind-heartedness instantly convinces one of his students, Rin Kokonoe, to make the ill-fated Aoki-sensei her lover. But what exactly are Rin's intentions for wanting to actively seduce Aoki-sensei, and will Aoki-sensei be able to help her to deal with them?

Mysterious cards came down from the sky one day. Capable of summoning powerful creatures from another dimension, they became the centerpiece of a new game called Bakugan. The game gained instant popularity among children and teenagers, with the best of them competing in a worldwide ranking. Meanwhile, war for domination over Vestroia, the homeland of Bakugan cards, rages on. Invaded by the White Dragon Naga and his servants, the Doom Beings, the realm becomes increasingly destabilized. Dimensions begin to merge and many Bakugan players come to realize that their pastime is not merely a game. Danma Kuusou, one such Bakugan player, intends to become the World Ranking's leader someday. However, during one of his fights he experiences a vision of a clash in Vestroia. The fight suddenly moves to Earth, where Danma comes into possession of a talking, mighty fire Bakugan, Pyrus Dragonoid. He soon gets dragged into the conflict, and together with his Bakugan Brawlers team, must traverse the dimensions and restore balance in a ravaged world. [Written by MAL Rewrite]

Park Hyung Seok is an unpopular, bullied high-school student who is looked down on by his fellow student for his obesity. Bullied and harassed every day by a delinquent, he takes out his anger verbally on his mother and asks for a school transfer. Resolving to run away from his problems and start anew, he moves to Seoul and plans to attend a new high school. A few nights before he begins school, however, he receives a new body that is tall, muscular, and handsome. When one body is in use, the other falls asleep; he can switch bodies by waking up the sleeping one. His days are split between the two bodies: the handsome one for the daytime, and the original for the night. As Daniel Park (Park Hyung Seok) lives with two bodies, he begins to see how much the world discriminates against people considered unattractive or different. He experiences discrimination and hates for his original body, kindness, and special treatment of others. His new body makes him a social-media influencer, a trainee for an entertainment company, and a clothing model. At night, however, Daniel's dream life becomes a harsh reality when he returns to his original body.

Fate/Prototype is a digest version of Kinoko Nasu's original version of Fate/stay night.