Also known as: 幼児化, 幼少期, ショタ化, ロリ化, 子供化, 幼少時代, シンスイカッコカリ, 幼児体型, 若返り, 年齢操作
When a character is portrayed younger than they usually are, most often (though by no means exclusively) as a young Child. Other examples can include a teenage version of an adult character, or a young adult version of an elderly character.
The opposite of Aged Up.