Ashita said:
Ohira only had a small part, from 0:42 when the man gets covered in a carpet to when gets thrown into the window.

Marketani said:
https://twitter.com/eguchi_1203/status/1508133398791229440?s=20&t=tdMl8fT5G4iBBwjk0RYSvg

So, theres apparently other people here besides Shinji/Kouichi Hashimoto and Ohira. Eguchi mentions a 'Yamada', but tatsuo yamada and makoto yamada were both credited, and both highly skilled so I can discern who is who. There were also several others who worked on this scene, doing some combination of 2nd ka/genga most likely just for how demanding this sequence was. Hashimoto picks up again from the explosion cut from the grenade launcher, although most of the layouts throughout should be him. Therefore, artist_unknown is here to stay.