@Pachka84 Wait... I thought your issue with these types of manga was the light-haired girl always being happy and energetic and the dark-haired girl being angsty and emotional.
In this story, the dark-haired girl does have some internal conflict, but she's still driven to fix her own flaws and seems to have a friendly and at times sarcastic personality. The light-haired girl, on the other hand, is a recluse who's very blunt and unfeeling towards the MC so far. If she does have feelings for the MC, she clearly doesn't understand how to communicate them in a healthy or effective way.
Correct me if I'm wrong, but all of that seems to go against your usual distaste for character archetypes, based on hair color of all things. If you're going to make stupid critiques, at least be consistent about them.