That chair comes with Yamato/Arcadia 1/60 VF1 that have the deco parts.   By the way, this new 1/48 DX VF1J is designed by Bandai with the help from T-Rex, which is the toy design team behind all Yamato and Arcadia VFs, and they also helped all Bandai VFs since VF25 renew version, that’s why Arcadia’s new mold release slowed down to such a pace...