Happy Birthday (Bleach Setting)

I wrote this birthday greeting for a classmate back in December... I might as well post it here. The boy-girl romance here is just friendship, because that classmate doesn't like BL, so I couldn't make it too obvious... The pairings are all hidden in this, so figure them out yourselves! :) Yeah, Ai Er is that classmate... She really likes Renji, so he gets a little more screen time... And there's my beloved Lan Yin! Too bad the story is set after those two defected, or else... Theme: