Nightmare moon, Sombra, Tirek, all names created and born from darkness. Chrysalys, Discord, and many others evil by breed or by ignorance. The ponies where growing yes, understanding and learning. But did they truely understand what Darkness was? More importantly.. how darkness changes a person? It is widely belived in the hearts of ponies that Darkness is a force of negativity and thus must be destroyed, but is that really the case? Mathias Cronqvist himself pondered the question often, and as his castle rose in this new land, he could not help but hear the question again in his mind. Perhaps this new world would hold the answers his soul and mind sought.
One of two castlevania stories to come to mind that crosses over with My little pony. As for the tags ill fix those later im sure if they dont fit after all.

Crystal Prep Academy is no school to be known for its gentle atmosphere and friendly people. This goes both for the students learning here as well as for the teachers. In the middle of all the grumpiness and selfishness, Dean Mi Amore Cadanza (or Dean Cadence as she prefers to be addressed) stands as a bonfire of kindness, trying to bring some warmth into the hearts of everyone at the school - a task that can be very exhausting and frustrating from time to time.

Luckily for her, she isn't alone anymore in her attempts to turn Crystal Prep into a friendlier place: Five students have discovered the joy of friendship, and decided to spread it through their school. Whenever they make an experience that teaches them a new lesson about friendship they report it to her - and sometimes, reading about friendship lessons is just what a hard-working dean at a high school needs to refresh a little.

This story is connected to my Shadowbolt stories following up "Let's go, Shadowbolts!" Each chapter includes the friendship report to a story. It will be uploaded one or two days after the corresponding story is finished.

A human stays among ponies, mystifying them with his odd traditions and customs. It will be five years before Celestia and Twilight can send him back to his homeworld. Until then, Twilight wants to study him and have him experience pony culture. These are their stories.

How Fuschia Blush and Lavender Lace perceive their friend The Great and Powerful Trixie, and how all three perceive the strange things that go on at Canterlot High School.