From Shoujo Crusade:
Haruse Yui ends up becoming the new landlord for her grandfather's apartment. But it's no ordinary apartment because all the tenants wear glasses and thus it has been dubbed the glasses apartment! Not only that, the tenants aren't what they seem?

Also includes:
Otokomae!
Dakara Suki to ka, Kirai to ka
Ojou-sama’s Clinical Records