Not much to say here, pretty generic dialogue, boring backstory that might've been better in the actual series. One does have to wonder they went to all the trouble of going to the Ganma world and then just using the same goddamn set. Just keep it on earth and cut out that 2 minutes of explanation!
And here's where I have a huuuuuuge beef with the writers for these lines: "Luminaries found their path, believed in it, and followed it honestly, until their lives burned out. Not geniuses, but people who follow their path through effort!"
That can apply to about half of them if you really stretch it (my analysis below)-
Edison - Is a thieving hack but I suppose the popular image of him does fit with this
Robin Hood - This fits
Newton - Was a genius and honestly da Vinci faced more adversity than Newton so no
Billy the Kid - Acted more out of desperation than conviction (and if it was conviction to become an outlaw then this definition becomes more odd)
Beethoven - Fits
Goemon - Since he's basically Robin Hood, okay
Benkei - Served Minamoto no Yoshitsune and followed him so no
Himiko - Hard to say since the historical figure was so long ago but okay I guess
Ryouma - Fits
Tutankhamun - Not in the least. Tut became pharaoh at age 9 and only lived to about 18 so most of his decisions were made by advisors.
Nobunaga - Fits
Houdini - Eh... I guess?
Grimm - Okay
Sanzou - Fits
In no possible stretch of that explanation can it apply to Tutankhamun. Honestly it applies to his brother?/father?/predecessor Akhenaten more, who broke with with tradition, Tut just kinda let everything go back to the status quo.
Newton is basically the same as da Vinci anyway so this is a bit of a kick in the pants.
They're trying to get out a good message but it comes as a too little too late, ultimately unsatisfying ending.
Please let Ghost die.