Shotacon

An illustration of an older female character attracted to a shota, characteristic of shotacon

Shotacon, sometimes shortened to shota (ショタ), is a Japanese slang portmanteau of the phrase Shōtarō complex (正太郎コンプレックス). A Shotacon is described as an attraction to young, or young in appearance, fictional male characters.

The female version is called Lolicon.