The Shy Hero and the Assassin Princesses

The Shy Hero and the Assassin Princesses is a twelve-episode action comedy fantasy series that aired during summer 2025. This ONA follows Toto, a skilled adventurer whose crippling shyness has trapped him in his starting town, unable to recruit companions for his journey. His luck seems to turn when three beautiful women—Ciel, Anemone, and Gore—invite him to form a party, but their true objective is far more sinister: they are assassins sent to eliminate him. The premise blends romantic comedy with genuine danger as Toto's extreme social anxiety causes him to faint whenever women fluster him, leaving him vulnerable to his would-be murderers.

This series delivers an offbeat twist on the harem romance genre by making the heroines active threats rather than love interests, creating comedic tension from Toto's obliviousness to their assassination plots. The juxtaposition of his heroic combat abilities against his social incompetence drives the show's humor. Each of the three women has distinct reasons for wanting him dead, adding layers to their characters beyond simple antagonism.

All twelve episodes became available to stream, with early access provided on ABEMA one week before the official television broadcast began on July 12th, 2025.