Is There Anything Wrong with Using Superstition to Play Volleyball?

My name is Hang Dali, a metaphysics master from a certain great Eastern nation. After making a million a year through metaphysics and reaching the pinnacle of life, I decided to retire from the jianghu early and live off the seven zeroes in my bank account. Then I met a fellow practitioner. He said I was destined to have two calamities this year, and that if I wanted to ward them off, I had to give him half my fortune. Me: "..." Me: "?" A fellow practitioner trying to scam me? Outrageous! Before I could get angry, the next moment, the calamity struck. Lightning cracked across a clear sky. I died. Then I came back to life. In this life, my name is Saotome Yoru. I was born in Miyagi and attend Aoba Johsai. My parents are both dead, but they left me a huge inheritance. Great. I can just wait until graduation, slack off, and retire. But right then, I suddenly realized that man had said I was destined to suffer two calamities. I looked at my bank balance and at the huge mansion I inherited, then gave a cold laugh. What two calamities? This life of mine is bound to go smoothly, and I'll spend it being a happy little couch potato! I didn't get to be a couch potato. My second calamity arrived. I, who take five minutes to run 800 meters, was dragged off to play volleyball. ...Help. [Bonus Scene] A certain Oikawa cheered passionately: "All right! We're going to win this match, no matter what! Saotome! Take this seriously!" Me: "...Uh, there's no need." I said listlessly, "I calculated it. We'll win." Oikawa: "? What are you talking about, when you were already wiped out halfway through practice yesterday?" Me: "Really." The next moment, the other team subbed out their ace captain, and their morale plummeted. Aoba Johsai won with ease. After asking around, we found out their captain had come down with a fever and had to withdraw from the match for treatment. Oikawa: "...ovo?" Later, facing a powerful opponent, a certain setter made a grand declaration, then raised an eyebrow at me. "You look pretty confident. Did you calculate that we'd win this time, too?" "I didn't calculate it," I said. "But I want to win with you." Oikawa turned away. "...Hmph." The main story is written in third person. About using metaphysics to play volleyball: if science can't solve it, this humble author knows a little metaphysics, too. Pairing: Oikawa, the Great King. No secondary pairings. The author likes all the characters unconditionally, so please don't criticize other characters in the comments. The cover was commissioned for private commercial use. Theme: Never give up hope.