Butterfly. I was hooked from the minute I heard it on a low quality phone stream during the Loonaverse concert, and it's my favorite non-solo from Loona by far. Senorita feels like it stops and starts again too often to take advantage of its strongest elements, it's a pretty jarring listening experience, and even at its best, it's still much closer to what we're used to from kpop, which I guess isn't something I'm really looking for. Still a very good song but Butterfly is the first new track in a long time that got me this addicted to it.