Yeah their first official release was the mini album called simply “01” in 2003, they released an album called “Apotosis” a year prior but some sources say they weren’t called 101A at that point yet. Anyway the line up was created all the way back in 2000. At least Noah and the K are the founding members. I have found their previous band Decay on compilation “Sugar Ace: Cream Cone Compilation Vol. 1” from the year 1999. From what I have heard Noah and the K know each other since university and were playing together since then. So there is a bit of history