....for ten points

This pin is part of the trade for both the WEWY Promo Coat and the "D+B" pin. Unbranded, it is the Ultimate drop of Reaper Beat and the Hard drop of both Draco Cantus and Panthera Cantus. One scan suggests that it, or something that shares its name, makes up 96% of the universe. For ten points, name this pin which can be traded for a Scarletite at Shibu-Q Heads and is inlaid with purple gemstones.
Answer: Dark Matter (No. 261)

For ten points each, given the color, name the character associated with that color in the "Another Day" bonus chapter.
[10] Pink
Answer: Joshua Kiryu (Yoshiya Kiryu)
[10] Yellow
Answer: Beat (Daisukenojo Bito)
[10] Pain
Answer: [spoiler goes here] (Grudgingly accept Pain is not a color and equivalents)

.......
I have this sudden urge to write an entire Quiz Bowl packet based on TWEWY.
This sudden urge originates 75% from the fact that I really do have to finish this essay, now, and 25% from the fact that at practice, a question mentioned a song called "Game Over," though I'm pretty sure the "Game Over" they were referring to does not mention 2ch.