Even tho we were never told anything about Tiger Funeral, I'm fairly certain it's meant to be the key to unlocking Maho. its name implies it's a heavy hitting attack, maybe an AoE (since the ox is already there to provide a concentrated hit).

I'm reading the JJK character guide and I'm kinda curious what model Akutami based Choso's design on. His early appearances in the manga give me the sense that Akutami was drawing a real person's face, whether from memory or reference

JJK-Aiwë falls out of a bathtub faucet somewhere in the Gojo Clan estate, & they set up one of these rooms to "contain the ancient curse" in their basement. The clan asks Satoru to come take a look, but both he and Aiwë are like "I don't give a fuck" so Aiwë just lives there now