BUR #25764 has been approved by @nonamethanks.
create alias nier_(young) -> nier_(brother)
create alias nier_(old) -> nier_(father)
for context, NieR (2010) had 2 different versions, NieR Gestalt and NieR Replicant. the main difference between the two was the protagonist of Gestalt was a father with Yonah as his daughter. in Replicant (including the modern remake) the protagonist was a younger man who is the brother of Yonah instead
I don't like the current names for them since it makes it look the tags are for two different forms of the same character when they're really just two different characters that play a similar role based on game version (a la Pokemon box art legendary mons)
but more importantly the fanbase barely refers to them as "young" and "old". "Brother NieR" and "Papa/Father NieR" are what most people use to differentiate between the two. however I think the qualifiers I suggested above should be easily findable too