Well arken you're gonna have to wait a bit because Zekira made a request before you did. And what's D-18?
Zekira: Don and Katsu and the whole gang, Dokon Dan included, were enjoying a festival when they found a yellow broken down robot. They take the robot back to Professor Otowa's (音羽) lab, and the robot identifies herself as 'Arumi'. The story progresses as Don, Katsu and Arumi spend time and have fun together. Dr. Waruru will show up to interrupt the festival by calling on his robots to wreak havoc, and that's when a boss battle begins. They're all named after elements(but I can't confirm some of them). I'll list the ones that aren't spoilers.
1st boss: Practice- Mekadon Song: Future Rabo
2nd boss: Anchimon (Antimony) Song: Hello! Halloween
3rd boss: Ittorium (Yttrium) Song: Many wow bang!
4th boss: Gariumu (Gallium) Song: SORA-I Earth Rise
Note the name Arumi. Does that make you think of anything?Malajax: I'll try after I finish playing Taiko Wii 2 and my exams are over. Thanks for noticing it
I made a video of Boss 8. If you don't wanna spoil it, don't watch it yet~. What I can say is, a certain 10 star Oni song that wasn't so great becomes epic on this boss battle. I'll link later.