Time Bokan Series: Yattodetaman

Two young workers at a quiet detective agency receive an impossible visitor: a princess from the distant future who claims to be their descendant. Her kingdom's succession depends on finding the legendary Firebird, a creature hidden somewhere across the vast reaches of history, before a rival royal faction can seize it first.

Armed with a time machine, the group chases its enemies from era to era in search of the elusive bird. Whenever ordinary courage is no longer enough, one of the unlikely heroes can become Yattodetaman and call upon extraordinary power, turning a bizarre royal dispute into a wild race through history.