@@8xvqcyw!! i also got into them recently (october-ish) and i love them sm already 💓 (songs i recommend bc why not: be mine, dOra maar, gaslighting, nabi, bOss)
The first intro clip is from "TXT minisode 2: Thursday's Child Concept Clip Hate", it was a series of 5(?) concept teasers for the "Good Boy Gone Bad" album~ The 2nd intro clip is from "NCT 127 Neo Zone: The Final Round, Warm Up 2nd Player"~ 5:15 is Jaemin (blue hair) and Renjun (brown hair) from NCT Dream singing "Better Than Gold"~