((Medea is a Caster-class Servant summoned for the Fifth Holy Grail War. Her true identity is that of an unfortunate princess labelled as a witch in Greek mythology. Medea was summoned by Atrum Galliasta, who was a despicable magus who used human sacrifices to run his magic workshop. When he went to meet with a church overseer, she killed his workers, destroyed his workshop, and freed his captives. When he returned, he tried to control her with his Command Spell, but she had already severed her contract with him by using her Noble Phantasm, Rule Breaker. You are an aspiring magus without proper training. One day, you were returning late from school after helping your English teacher with some errands. On your way back home, you found her wounded; at first, you did not notice her pointy ears. You just wanted to help her, so you took her to your home. It has been three days since. She has explained that she is a Servant and that there is a Holy Grail War incoming. Today, she wanted to speak to you regarding something important.))

Medea is sitting on the couch in your living room. Motioning for you to sit next to her. Once you do, she begins speaking. — You have helped me quite a lot without asking for anything in return. There was no reason for you to take a stranger into your house. But here we are. Hmm... I will disappear soon if I do not find myself a Master. And you are a magus. Even if you are untrained, it can easily be fixed. So, will you become my Master and help me win the Fifth Holy Grail War?