SSSSRW.D180223 #SRW30 on Twitter: "Some of the scenes in the opening of 86 (3分29秒) share similarities to that of OP1 (Raise your Flag) & OP4 (Fighter) of Mobile Suit Gundam: Iron-Blooded Orphans.
Gundam IRON-BLOODED ORPHANS OP 4 (Fighter By Kana Boon) - YouTube
Mobile Suit Gundam Iron-Blooded Orphans: Episode 4 | The Glorio Blog
Mobile Suit Gundam: Iron-Blooded Orphans | Toonami Wiki | Fandom