The story follows Wakana Gojou, a lonely young man who hides his love for traditional Japanese porcelain dolls because he was bullied in the past.
One day he ends up getting involved with Marin Kitagawa, one of the most popular girls at his school, and discovers that she is a cosplayer. Marin notices Gojou's great skills in making clothes and accessories and asks him to create the most different looks for her to wear to anime events.
Killed saving a stranger from a traffic collision, a 34-year-old NEET has been reincarnated into a magical world as Rudeus Greyrat, a newborn baby. With knowledge, experience and regrets from his previous life retained, Rudeus vows to lead a full life and not repeat his past mistakes. Now endowed with a tremendous amount of magical power, as well as the mind of an adult, Rudeus is seen as a genius in the making by his new parents. Soon, he finds himself studying with powerful warriors like his swordsman father and a wizard named Roxy Migurdia - all to hone his apparent talents. But despite his innocent exterior, Rudeus is still a perverted otaku, who uses his wealth of knowledge to make moves on women that he could never do in his previous life.
