Professor Snape Transmigrates

This story is on indefinite hiatus. Don't fall in. After Professor Snape died, his devoted readers and fans were consumed by regret. The administrators at the Virtual World Soul Management Office were under enormous pressure. They awakened Professor Snape's soul and decided to compensate him, letting him choose the conditions for his next life in a virtual world. What did Professor Snape ask for? First and foremost, a well-ordered world with strict rules, nothing as chaotic as the wizarding world. Both parents alive, preferably with older relatives at home as well. Lots of siblings. And when it came to love, could he ask for a soulmate who belonged only to him this time...? None of these conditions seemed unreasonable. After the administrators discussed it, they gave him various compensations, then handed Professor Snape a book containing the framework of the two-dimensional world in which he would be reborn, and sent him off into another two-dimensional world! After waking up and reading through the story of his life this time around, Professor Snape wore a strange expression... Theme: