Responses
Searched and thought really hard about this but the only on I found is Ore no Tenshi wa Mayonaka Akuma. It's not about an angel or demon even though title and cover implies that. Not sure if I would call it a story among others though...
i need help. im looking for this teacher x student where the teacher looks very mean and everyone is scared of him except one guy. it was a story among other stories. please help :)