Grandmaster, And The Familiar

A boy who abides the rules of society and follows them to the tip, even the school rules. The boy being a reputable pupil that is a clear example of a """"hardworking teacher's pet"""", whilst also maintaining a good grasp over his wellbeing and expertise through countless martial art styles. However, finds himself falling off a roof and suddenly meeting a woman that instantly proclaims:"""A special type...okay, from now on your name is Venix and you shall serve me until...""""