Twice has the best Japanese discography (from 3rd gen).

I agree, their Japanese albums are fantastic!

I don't necessary thing that they're better than their Korean discography, because I love songs from both, but I agree about the rest

Wrong, Japanese releases were consistently good, but the peaks have always been with their Korean releases What is Love, Fancy, The Feels, ICSM.

Nice of you to add from 3rd gen to the title coz i was also about to mention SNSD