[Seitsuki]

I think the problem is it's hard to find a less appealing character than Nagi. Athena/Luka/Hina= best girl(s). Izumi/Maria don't get featured much (anymore) but are still miles ahead. Even Isumi/Ayumu are more endearing to me than the 'main heroine'.

I feel basically everyone else is either better written and/or better developed. Nagi is just relentlessly dragged along because the author prefers her. When all you have is a hammer...