Nodoka, Yue, Ako, Anya, Makie & Chachamaru all like him romantically.
Ayaka comes off as a blatant shotacon, but acts more sister-like when it counts. Her and Asuna would be the sister-types.
Chisame likes him to a degree, but seems to be simply more of a deep appreciation for a good friend than anything else.
Eva has pent-up sexual frustration which she takes out by molesting him.
As for the rest, Konoka, Setsuna, Kazumi, Kaede, Ku-Fei and Haruna all seem to hang aroung out of duty/interest/friendship/for the lulz.