Luckily for you you, those crazy fanatics also transcribed every last game quote (except the endings, which
our drunken god
Zun politely asked to don't be spoilered) and put them on the wiki. Like here
, you can find Utsuho's lines closer to the bottom, from the route where you play Reimu and Yukari team.
Lord Yatagarasu, the Black Sun.
Thank you for giving me your power.
The sunlight that rains down on the Earth
is a nuclear furnace that will create new atoms.
My ultimate nuclear fusion will burn up
every body, heart, ghost, and fairy!
At the bottom of the page you can find the story of the other routes, Utsuho's got diferent lines in each one. Then the spellcard page itself has Zun's personal comments and puns, which I also use quite a bit.
Trivia: No less than half the fan material produced by the whole japanese population has been touhou-based for the last years.