You can find Reanimal's secret code in Chapter 1: Dead in the Water. However, note that the secret code is the same in every game, so if you've already passed this chapter and just want the answer, go ...
The Genshin Impact version "Luna 5" (or 6.4) livestream is over. Here are codes you can redeem for free loot.
Grab all the Primogems from the Luna 5 special program.
Some results have been hidden because they may be inaccessible to you
Show inaccessible results