The Akatsuki/Azusa profile is a very simple effect that allows a player to essentially exchange their hand with a character from the top four cards of their deck. There are many mill type effects in Weiss, but what makes this profile stand out from the bunch is its ability to check up to four and its immediate discard effect to exchange for another more useful target.
In a game like Weiss Schwarz, where ensuring that your deck is in a state where you have a potential to cancel, cards that both mill and push your game plan are always prized profiles to look out for. This profile is a powerful because it carries both effects on one card. Whereas similar mill effects usually have a forced amount of mill or carry the only a chance to net you filtering effects, this profile gets you what you need while giving you the option to choose how many to mill from between zero to four. Additionally, on-play effects are generally higher valued than on-death or sent to waiting room effects due to the immediate power of the garnered effect.
What makes the profile so valuable is it’s simplicity and cheap cost that can be beneficial. This profile is simply a free ticket to swap any card in your hand for another card in your deck as early as your first turn. It’s a great filter that can also help you get targets into your waiting room either through milling them or through its discard cost.
This discard milling effect for checking four has long existed in the game far before the advent of the two cards shown above. The only difference is these cards were the first to have the effect at level zero and without any additional cost tied to the card itself. Azusa came out earlier, but as you can tell from the set code, not too much earlier than that of Akatsuki with both coming out respectively in 2014 in the Idolm@ster Movie and Kantai Collection 2nd Fleet sets.
LL/W36-067RR “夏祭りデート”西木野 真姫 (center)
OMS/S41-030SP-SP “お気に入りの一枚”カラ松 (right)
As the game grew with newer sets added, the Akatsuki/Azusa profile has moved to targeting not just traits but colours as well. It is very rare that the profile is printed with the exact costs as the original Akatsuki/Azusa. Newer sets generally have extra costs incurred onto their Akatsuki/Azusa, or the profile can only be used at a later level. Either way, even with some of these restrictions, this ability continues to see play. Never doubt the power of a simple check up to four filter.