Akuu is Mashiro’s air pressure, hands-free weapons. He dies later to Ariu. Part 2 still has him alive in the talks, objecting to stolen ore. Shiba’s certainty does not yet have a blade to point at. Mashiro is the voice that does not need Enten to say the mineral is already a crime.
Alive in the conference
The Irishima plates are not the later deaths. This page keeps the art and the sequence the fight log already printed. Official chapters: VIZ / MANGA Plus.