You're not a true hardcore fan of a TV show if you haven't memorised or are not trying to memorise the theme song (if it has lyrics) amirite?

I want to change the world
Jounetsu taya sazu ni taka naru mirai e
te wo no baseba kaga ya keru hazu sa
it's wonderland

Kimi no kokoro furueteta asu no minai yo
nanimo shiji rarezu mimi wo fusaku
kimi ni deaeta toki houtou no ibasho metsuketa
nani genai yasa shi saga _ atte
bokura mesa meru

I want to change the world
something something something

Change my mind
something something something
it's wonderland

That was the bit (a little over half) of the opening theme song for, Inuyasha I memorised in Romaji. I memorised it only by listening to the song so excuse me if I misspelled or mis spaced some words.