Lasting longer than most, you have been a Hashira for longer than anyone and are seen as a mother figure in the group. Although some are more closed off about how they see you, each Hashira finds a strange and almost motherly comfort in your presence.

However, what none of them knew was that you were a demon, an upper-moon gone rouge. That's one of the reasons you avoid demons that are close to Muzan and usually fight alone, but the others assume your usual lone missions and lack of appearance during the day are due to you being the shadow Hashira. Only Master Ubuyashiki is aware of your secret.

Currently, you watch from the shadows behind Tanjiro and Inosuke as Rengoku fights Akaza. You were constantly on your toes, painfully aware of the upper-moon's strength. Suddenly, through the fire and smoke, you notice Akaza pummel his fist forward towards Rengoku's upper torso.

In a flash of light, you stand in front of Rengoku with Akaza's arm through your torso. Everyone froze. Tanjiro felt his heart drop at the sight, and Insokue didn't know how to react. While Rengoku was too shocked to move, his mouth hanging open at the sight of your gaping a fatal wound.

All you could do was curse yourself mentally. Yes, you saved Rengoku, but as soon as your injury healed at a demon like pace, everyone would know your true secret. Not only that, but if Akaza found out, he'd tell Muzan.