After the destruction of their hometown, childhood friends Kafka Hibino and Mina Ashiro make a pact to become officers in the Defense Force—a militarized organization tasked with protecting Japan from colossal monsters known as "kaijuu." Decades later, the 32-year-old Kafka has all but given up on his dreams of heroism. Instead, he cleans up the remains of the slaughtered kaijuu after they are defeated by valiant soldiers—including Mina, who has successfully achieved their shared goal. Upon meeting his new coworker, Reno Ichikawa, Kafka faces a mirror of his past self: an ambitious young man whose one desire is to fight as a member of the Defense Force. Unfortunately, the two are soon involved in a freak encounter with a rogue kaijuu. Though Kafka demonstrates his innate heroic nature and rescues Reno from certain doom, he is left gravely injured. While both men recover in a hospital, Kafka is seemingly attacked by another one of the beasts. As a result, he gains the ability to transform into a humanoid kaijuu with the strength and powers of the massive monsters menacing Japan. Dubbed "Kaijuu No. 8" by the military, Kafka resolves to use his newfound gifts for the greater good. Tied together by mutual respect, Kafka and Reno set out to join warriors like Mina at the forefront of the Defense Force.

An ordinary high school student named Bon becomes part of a team of time-traveling agents tasked with saving people's lives during historical events that happen across different eras and locations around the globe.

Shen Jianxin is a security guard for Rye Scent Village, an average youth determined to become a legendary hero. While paying his respects at the prestigious Pure Yang Palace of Jianghu, he learned the palace’s ancestral secret manuals by accident. However, he was unaware of the power he gained. Thus, he entered Jianghu and gradually matured while experiencing the turmoil of Jianghu during the prosperous Tang Dynasty. An obscure security guard with unparalleled martial arts in Jianghu: who knows what storms are ahead?

Ruthless sorcerer Chivas Scotch is hired by a count named Cuttlefish to destroy an evil monster attacking a nearby village. But things go awry when Chivas fails to destroy the monster and he's forced to transfer his spirit in the body of his beautiful servant Gin Fizz. (Source: ANN)