College student Tokiwa gets invited to a mixer by his female classmate Suo. But when he arrives with his friends, they're greeted by three dazzlingly handsome men?!

During their martial arts training expedition in China, Ranma Saotome and his father Genma suffered an accident, which in turn, afflicted them with a curse—whenever they are doused with cold water, Ranma transforms into a girl, while his father turns into a panda! Only hot water can reverse these changes, but any further contact with cold water opens the can of worms once more. Unfortunately, the trouble does not end there, as Ranma finds out about his betrothal to one of the daughters of Soun Tendou, his father's closest friend. During the families' first meeting, it is decided that Ranma is to be married to Akane, the youngest daughter, a decision that is met with vehement protests from both sides. The two are simply not compatible, yet they are forced to live under one roof. Ranma's status quo further adds to the chaos, leading him to a series of comedic situations and misunderstandings that, in the grand scheme of things, may just be what he needs to work with Akane.

One day, Hitoyoshi Yokoya wakes up to a mysterious nameless girl dressed as a maid ringing his doorbell, asking to be his servant. With her former master referring her to the Yokoya household, she offers her expertise as an assassin. Intimidated by her background, Hitoyoshi tries to send her away; but when she leaves something behind, he rushes to return it to her and is nearly hit by a truck in the process. With her fast reflexes, the girl saves him just in time, and Hitoyoshi ends up taking her in. Ironically, the maid lacks any skills apart from the art of killing she has perfected since childhood. Nevertheless, Hitoyoshi welcomes the girl with open arms, encouraging her to leave her monochromatic past behind and experience a normal life. To seal the deal, Hitoyoshi names her Yuki, marking the beginning of her path to redemption and happiness.

This is the story of Puniru the slime and Kotarou, a middle school student, until they cease being friends... Kotarou Kawaii is a second-year middle school boy. When he was in elementary school, a slime he created came to life, and for the past seven years, he has been spending time with the slime named Puniru as his "friend." However, there is one problem for Kotarou... Over the seven years, both have grown significantly, and Puniru has transformed into an incredibly beautiful girl! Besides her beautiful appearance, Puniru freely transforms into various cute forms as a slime, causing Kotarou to be both excited and bewildered by her carefree behavior every time. Will Puniru and Kotarou be able to continue spending time together as "friends" despite these challenging days ahead?