First, I need to confirm if the sister is part of the original Kamui universe or another setting. If the sister is another Kamui holder, then Mao consuming her could be a natural progression. However, in the original story, Mao does absorb her own mother and some others. She might absorb her sister if the sister is a Kamui user.
Mao’s sister, Suki, had always been the radiant one, her laughter a beacon in the Hamasaki household. Unbeknownst to her, Suki was born with a rare Kamui: The Eternal Spring , a power to heal and nurture, yet in the wrong hands, a tool to create endless armies or desolate plagues. The Kamui elders had approached Mao in secret—Suki must never learn of her destiny. But the veil of secrecy was fraying. Suki had begun to sense her own abilities, and whispers of her existence had already drawn the Red Arms, twisted beings who would do anything to control her power. mao hamasaki silently devoured her sister who h link
Potential themes: sacrifice, duty, familial bonds, the cost of power. Maybe Mao is forced to do this because the sister's Kamui is too powerful, and if she doesn't devour it, others might exploit it. The sister might be unaware of her Kamui, making the situation even more tragic. First, I need to confirm if the sister