A cat-like alien from a distant galaxy, MuuMuu, arrives on Earth. His goal is to learn about home appliance technology on Earth to recover the technology his species has lost. The protagonist, Sakurako, has a typical university life, but everything changes with MuuMuu's arrival! What begins as an unexpected cohabitation quickly turns into a whirlwind of chaotic events. The chemistry between Sakurako and MuuMuu leads to a super-spectacular, appliance-filled, and cat comedy adventure.

The Mikadono sisters—Miwa, Niko, and Kazuki—stand at the pinnacle of Saika Academy as its Three Royals, renowned respectively as prodigies in shogi, karate, and theater. Unfortunately, they have drifted apart from each other due to their overwhelming dedication to their fields, effectively turning them into strangers living under the same roof. Enter Yuu Ayase, the son of the late Subaru Ayase, a legendary actress who graduated from Saika. Unlike his mother, Yuu lacks any extraordinary talent whatsoever, much to the disappointment of those who knew her. Still, he transfers to her alma mater with one quiet promise in his heart: to fulfill her final wish that he build a true and happy family. It just so happens that the Mikadono patriarch is also Subaru's longtime friend and benefactor, and he offers Yuu both a place to stay and a fresh start. Thrust into the lives of three estranged sisters who act cold toward him, Yuu may not be a genius himself, but the clumsy sincerity he brings might be what they all need to start anew.

Kaede is a normal school girl who was studying for her exams for school when suddenly she is interrupted by Shinobu, a girl who is a ninja-in-training, attempting to complete her exam. The problem is, in order for her to successfully complete her exam, she must steal one of Kaede's panties! In Kaede's attempt to stop Shinobu from stealing her panties, an unexpected friendship is forged between the two. Kaede soon becomes engrossed in Shinobu's world, surrounded by partying ninjas and a yellow pac-man like thing by the name of Onsokumaru, who claims to be the master of all ninjas!

Twenty years ago, numerous "Spiritual Ruins Gates" suddenly appeared all over the world. The spiritual energy gushing out of them would awaken the supernatural powers of those who came into contact with them. These people who awakened supernatural powers were called "Spirit Warriors". Among them, the "Space series" Spirit Warriors became the strongest because of their outstanding performance in the "Beast Tide Disaster" and the scarcity of their awakening. Jiang Nan grew up in an orphanage in Jiangcheng, Lingzhou. He aspired to become the top spiritual warrior since he was a child. At the age of sixteen, he awakened the strongest and rarest space-based supernatural power, becoming the second space-based supernatural power in Lingzhou. Our story begins here...