[source](https://game-i.daa.jp/?AppStore%E3%82%A2%E3%83%97%E3%83%AA%E6%9C%80%E6%96%B0%E3%82%BB%E3%83%BC%E3%83%AB%E3%82%B9%E3%83%A9%E3%83%B3%E3%82%AD%E3%83%B3%E3%82%B0)

i think its worth mentioning that genshin in JP ios stores has an additional 30% tax on its ingame purchases , something its competitors like hsr,zzz and fgo dont have which makes spending for genshin much more expensive compared to other games so very few people use it, a lot of jp players stopped using ios store to buy genesis crystal altogether therefore both mavuika and skirk were unable to get top 1 on jp charts, some people associated this with the game losing popularity when in reality mobile players were just realising that using 3rd party apps/codashop/epic games store is much cheaper than using appstore, among all this columbinas banner somehow coming out and breaking all the norms by just hitting rank 1 IOS with that insane debuff is just mindboggling tbh.
Even with the massive 30% extra tax on JP IOS Columbina's banner mannages to hit rank 1 in sales chart, something both the mavu-citlali double banner and skirk failed to do.