Yandere Mahoutsukai wa Sekizou no Otome shika Aisenai

Lara, the magician, confronts a dragon to protect her disciple Alistair, and magically turns into a stone statue to avoid death. Twenty years later, she wakes up safely and is astonished to see her arrogant disciple Alistair become an older lord who is loved by everyone. Alistair reunites with Lara and begins courting her fiercely.