Ane Kui Yuusha to Teisou Gyakuten Teikoku no Onee-chan!: Gomi Skill Baka ni Saretsuzuketa Anegui Gift no Shounen, Skill Kakusei Shi Teikoku Saikyou Nanadai Onna Shogun wo wo Otoshima Kuru.

Natsuki has long suffered a life of misfortune due to his "Ane-Kui" ability, a power widely dismissed as useless garbage. However, when he stands against an invasion by a neighboring militaristic nation, this mocked skill reveals its true potential. The enemy’s elite commanders, including the "Flame General" Freia and the "Ice General" Shirayuki, all embody a distinct older-sister archetype. As the conflict escalates, the world moves toward peace even as the empire’s order descends into chaos. Experience Natsuki’s unconventional and extravagant heroic journey in this fantasy comedy.