If it's really visual novel
> Canon route: Houki, nuff said
> Fan preferred route: Charlotte or Laura
> Least popular route: Lingyin
> Most fanservicey route: Tatenashi (if exist), or Cecilia
> Bonus route: Tatenashi (?) Madoka (also bad end?)
> Expansion/Fan disc: Yamada and/or Chifuyu and/or Tabane