Rinkashimezu

Once, there was a kid that dreamed of becoming a famous idol. However, his parents are underground assassins and they’ve set a path for him in order to continue their legacy as famous underground assassins. Trained, beaten up, and ordered to kill was the life of Donovan until he's recognized as the Prodigy. His last mission was to take the head of the Queen and he can live a normal life but unfortunately, he was killed. His last moments seem to become colder until the darkness came and then... he woke up being carried by a man being chased by... monsters? Where is he? and, Why is he in a body of a baby?

Ogawa Hideki is a high school boy that has a disease called "Disease XX" which, when triggered makes him a pervert. Because of his unknown disease, Hideki's parents transferred him to a different country that offers a free medication in order to cure him. Several years passed by and his parents transferred him back in their home because they thought that his disease is gone, but the truth is, his disease is still active. After his transfer, he goes to the nearest manga shop and accidentally met a weird girl. Who is this weird and beautiful girl? Will this girl change his life?