In an old mythical world, there reside spirit-like beings who oversee the natural order of the mortal realm. One of them, a young girl named Chun, has just come of age and must undergo her rite of passage by experiencing the human world for herself. While there, she gets caught in a fishing net during a storm and is rescued by a human boy.

However, the boy ends up drowning during the incident, and Chun returns to her realm full of guilt. Afterwards, she meets the Soul Keeper and decides to revive the boy in exchange for a part of her lifespan. Little does she know, meddling with the natural order of the world has severe consequences.

Da Yu Hai Tang is a story about sacrifice and redemption as Chun comes to terms with the limitations of her powers and deals with death, love, and her own emotions. She must decide if she will sacrifice everything to save the human boy or forsake her moral obligation for the order of the world.

The Kazama Family—a gang of three wannabe delinquents and close friends, spearheaded by Kenji Kazama, is trying to make a name for themselves at Fujou Academy. On the first day of the term, the gang finds themselves putting out a fire in the Game Development Club. Instead of thanking them, the eccentric club members attack and knock out Kenji's two friends, forcing Kenji to fight for his life. Failing to escape, the gang leader is coerced into joining the Game Development Club. As he settles in, Kenji gets to know the four girls responsible for his provisional membership—student council president and general tyrant Chitose Karasuyama, spirited tomboy Sakura Mizukami, negligent club advisor Minami Oosawa, and the school's infamous shadow leader Roka Shibasaki. Throughout the Game Development Club's constant shenanigans and his desperate attempts to leave the club, Kenji begins to realize that he may be actually enjoying himself. [Written by MAL Rewrite]

The 11-year-old Marui triplets could not be any more different. The oldest one, Mitsuba, is sadistic and kind of mature for her age. The middle one, Futaba, is perverted and very athletic and has the strength of a full-grown man. The youngest one, Hitoha, is generally very quiet and gentle but when push comes to shove, she might just be the strongest, the most perverted and the most sadistic out of the three. The three are all in the same class, led by the newly graduated teacher Yabe Satoshi. He usually gets pushed around by the girls and, on occasion, abused but the triplets also try to lead him and the new school nurse, the clumsy Kuriyama Aiko, together. However, Yabe had no intention of dating Aiko and the methods the triplets use to accomplish their goal are highly unorthodox...

The story begins on a rainy night, when a homeless little black cat is brought home by a young girl Luo Xiaobai. She names the cat Luo Xiao Hei. However, Luo Xiao Hei is no ordinary cat: he is a supernatural entity that hosts several small creatures called Heixiu. As Luo Xiao Hei new life soon threatened by the mysterious Diting, who commands three winged wolves.