GUYS as you can see this manga can be at some point be considered grooming but it is not. On the first chapters, we can see Kazuki or whatever his name is was giving consent to his teacher (we can say that he was shy so we can be confused about that) to touch and have intimate actions. This continued and we can see the VISIBLE trust they both have. Kazuki wasn't isolated (which is one of effects of grooming) and continued with his life happily, while having relationship with his teacher. There was no manipulation and and forceful coercion, so we CAN REALLY say that this manga isn't about grooming.
I'm No Match For Him