Descendant Of The Demon Saint (DMC Male Reader x Fire Emblem Three Houses

A Ball and Death of The Blade Breaker

It's the month of the ball and the White Heron cup, Byleth was looking for someone to participate in the latter. I was at the training grounds with Felix and Shamir. Felix was swinging his sword trying to hit me, but I spun around him and hit his back with a training sword causing him to fall over. I saw Byleth walking up to me so I tossed the training sword to Felix. "what brings you here? I hope you aren't trying to get me to dance for this Heron Cup thing." 

"Don't worry. I already asked Dorothea to represent the class." Byleth said reassuringly. " I came here to talk to you about what Rhea said to me yesterday. she said that you and I are destined to be a source of great hope for all. What do you think that means?"

"I think I understand what she meant by that. We both possess the Crest of Flames, I'm the grandson of a demon who aided Seiros, you use the Sword of the Creator, I'm sure she doesn't know about this part but we both can control time in different ways." I say.

"How did you know about my power to rewind time?!" Byleth asked shocked.

"I sensed it when we went on our first mission around the time I came to this world," I say. "Anyways, I've been told we are going to investigate an unused chapel this month with your father. Do you think that Solon and the Flame Emperor are involved?" 

"I'm not sure, but it is a possibility," Byleth said.

Timeskip

I was with Byleth walking around in the monastery until we heard Flayn's voice. "Brother, please wait!" we heard her say.

"For the last time, Flayn, the answer is no," Seteth said in the distance.

"You are departing for the Rhodos Coast, are you not? I must come!" Flayn said.

"You will do no such thing. I am not going there to pay respect at the cemetery, but to do battle. With you there, I will be beside myself with worry. It will be easier for me to fight if I know you are safe." Seteth said.

"But...I must!" Flayn said as we walked by. "Professor! (Y/N)! You have come at just the right time."

"I don't like the sound of that..." Byleth said.

"I only wish to make a small request. My dear brother is about to set forth on a most dangerous mission." Flayn said.

"A mission?" Byleth asked.

"Indeed. The Western Church is attempting to seize sacred ground by force. With this action, they are no longer believers of a different creed. They are a dangerous threat that cannot be ignored. We cannot allow the holy artifacts enshrined there to fall into their hands." Seteth said.

"I, too, wish to be of use to the church! And I do admit I am terribly worried about my brother. No matter my protests, he will not allow me to come." Flayn said. "This is where you two can help. Will you accompany us both on this expedition?"

"Why us?" Byleth asked.

"If both of you are there to protect me, my brother's fears will be allayed. Isn't that right, brother?" Flayn asked.

"I suppose your aid would indeed be useful, yes," Seteth said.

"I knew it! Please, Professor, (Y/N), will both of you join us?" Flayn asked.

"Very well," Byleth said.

"I'm ready to go, but it will be better to the others," I say.

"Wonderful. Let us depart at once!" Flayn said.  once the other students were gathered we set out for the Rhodos Coast.