basically the Links of various games are brought together to go on an adventure or something
"Time" is Ocarina/Majora Link, but based on the "Hero's Shade" from Twilight but still as a living human
"Twilight" is wearing furs and has facial markings/tattoos or something to match the markings on his wolf form
stuff like that in regards to looks.
I have not fully fully looked into this popular fan series myself, but I have seen the art and I always see new fanfics based on it on ao3.
currently reading a fic based after the end of BOTW where Link (Wild) and Zelda are just trying to enjoy themselves doing what they want to do, but while out looking for a Yiga to troll ("there is no such things as a Hero and only idiots with big bellies would believe those stories") he encounters the others Links, and shenanigans, trolling, and bad lies ensue.