Awesome Fridge Heartwarming Literature Main TearJerker YMMV
Crowning Music of Awesome: the first series's third ending song, "Crimson."
Ear Worm: A few of the Recurring Riffs and the first series's fourth ending song, "Drawing Paper".
Ensemble Darkhorse: Gaon is a striking example. Seriously, despite having little appearances on the first series, almost Put on a Bus on the second one and currently having the status of being a Canon Foreigner, he's very popular within the fandom. It doesn't help that he's always featured in doujinshis that are all about his love/hate relationship with Zorori.
Fanon: Gaon (seme) and Zorori (uke) as Yaoi Guys.
Foe Yay: Zorori and Gaon, even though Gaon only appeared for a few episodes in the first series and then was almost non-existent for the second series.
It doesn't help that Gaon keeps giving Zorori a rose every time they meet.
Or that Gaon built a robot of Zorori that he named Sorori and that was the reason Zorori accidentally went to Hell. Makes you wonder what he built it for.
Also Zorori and Arthur.
Jerkass Woobie: Zorori could be seen as this in some ways.
Unfortunate Implications: Myan started out looking like a young woman, but after her makeover she looked like a little girl. Zorori liked her better that way.