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This is confirmed Fujisawa but it should be noted lots of corrections including movement were made to his work on this film

In his own words, only the effects can really be considered his work

edit: He deleted the tweet mentioning the corrections, so take that for what you will
Such a strong scene, glad to finally have explicit confirmation. From the work he posted afterward (now deleted), it does look quite corrected in many areas (3rd, 4th and last cut in particular)

Genga + some corrections:
https://twitter.com/kktytdg/status/1650370957645852672 (inactive)