I'm a bit of a Tou-whore myself, despite only playing Embodiment of the Scarlet Devil and Perfect Cherry Blossom. Both of them were truly amazing. Everything from Zuns musical syncronicity with the stages to the characters, to the subtle humor are jawdropping. Few game companies ever put that much attention to detail and he's just one man! As a writer and one who has always wanted to make a game of my own, find Zun an honorable inspiration.
That aside, chen, the prismriver sisters, patchouli knowledge, my favorite tomboyish nine ball,sakuya, meiling, letty, marisa and especially alice margatroid and flandre scarlet are amazing characters
Id love to play the PC98 games, especially mystic square.