Okay so, if every Nijisanji EN wave is able to immediately have a song ready on debut, wouldn't that mean they'd have been getting to know each other for months before they actually debuted? An original song isn't exactly quick to make and these are songs that all of them sing together. Unlike Hololive which doesn't debut with songs so it's easy to believe they maybe met each other like a week before debut. They seem to have a lot more work put in for being smaller.