If you're looking for manga similar to JK Kingdom Tokyo, you might like these titles.
Kaguya, an alien who was cast down onto Earth as punishment, takes over the body of a high school girl and must learn to adapt to human society... but of all things to take interest in, these lowly life forms' "sexual reproduction" is what catches Kaguya's attention...
Pinto is a 14 year-old boy who lives with his uncle and has a passion for photography. One day Pinto spots a girl on top of the town lighthouse, who flies off of it and lands squarely on his head. It turns out that this is his uncle’s wife’s little sister, named Pipin, who has come to live with them. Apparently, Pinto's uncle married an alien…
A high school boy who's living a relaxed life in the countryside has a difficult time dealing with people but can befriend any animal instead. One day a cat-eared invader from space comes & demands to be satisfied otherwise she will destroy the planet!
Shibata Youichi is an ordinary high schooler, but one day he runs into a mysterious heroine! The cute girl knows his name, and (as in a stereotypical anime) she's an alien who needs him to help save her people! Soon enough, Youichi finds out that this situation was too good to be true... The girl, named Kyara, does represent aliens, but her people are actually interested in Japanese manga/anime/game culture. They want to use his home as a base and his brain as a measuring tool of the level of appeal of their heroines!
Marko is a young Russian university student who is looking forward to finishing school so he can spend more time with his fiancée. However, those plans go out the window when he’s abducted by aliens! These extraterrestrials have a mission for Marko, one that will take ten years. All Marko can do is make the most of it and get to know the strange creatures who are now his co-workers in this offbeat tale of a life far from Earth.