Selahuddin

I've watched hundreds of knife making videos on youtube. It never gets boring.

Who cares.. All these mc's, their targets start out as Grayfia-Rias-Akeno and then they get stuck on these aika-type side missions. I bet you'll join the kendo club in future episodes and develop the side characters in kendo too. I remember that human magic in dxd is done with calculations. Your parents are billionaires, tell them about the supernatural side. Ask them to research a magic book. Try to learn senjutsu. Do meditation, maybe the system will help you learn it.

Even the name of the system is 100XL or something..