About the book: year / Snape conducts Occlumency lessons with Harry Potter and shows him episodes from his school life. Canon stories. There is no big contradiction to the canon, because if this is described did not happen - this does not mean that in fact this did not happen. Moreover, the Marauders themselves claim that Snape quite worthily gave them back. For every action there is always a reaction - the law of physics, and therefore the law of nature! Our Severus Snape is neither a daisy nor a violet, he is a vengeful and harmful boy, and does not forgive insults . This is exactly how we see him and write him, and not as a pink, madly in love and fluffy bunny. Therefore, humble yourself and don’t complain, fans and haters of our dear professor! For some it’s laughter, for others it’s tears. C'est la vie! We don't accept claims, this is our vision of the situation. Sometimes humor, sometimes drama.