Deathsmiles Megablack Label 1CC with Sakura. This is a demo of trying to go the easiest route to a clear, or at least one of them. There is actually another way to go where you get another extra player and so on. This game is odd in that depending on the route choices you make, it can go from being literally the easiest Cave game ever made to clear (as shown in this video) to one of the hardest (search for a superplay of it to see an example). So for example if you choose level 999 difficulty on all the stages and also go to both of the extra optional levels, the clear difficulty is just insane. In fact just adding in the 2 extra levels makes the overall clear difficulty 100X harder.
Currently, CAVE PCB has 17,325 views for Deathsmiles across 7 videos. His channel uploaded an hours worth of Deathsmiles videos, roughly 4.11% of the content that CAVE PCB has uploaded to YouTube.