>>59597941ENs don't do them very often because they're huge fucking pain in the ass compared to just singing in japanese
You have to either; 1. Be fluent enough in nip to translate the lyrics in a way that still capture the feeling tone of the OG version or 2. Pay someone else to do that for you. And even once you do that you STILL have to ask the original creator for permission which is a total crapshoot
For example, Mori has an entire english version of Idol that she literally can't do anything with because Yoasobi never gave her the perms because they wanted to release their own english version but Mori beat them to the punch about a month earlier