Standing at Center Court, Calling for My Guardian Characters

【Updates daily at 11 p.m. If anything comes up, I'll post a note xd】 Every child has an egg in their heart, an egg of the soul invisible to the naked eye. Even the most exceptional children have no more than three. But Tsuna is different. He has a whopping seven, enough to turn into O-balls and summon the dragon. Tsuna doesn't want to summon the dragon. Tsuna chooses to refuse. But just as he threatens to throw the eggs out if they don't disappear, one of them, a blue egg, moves. “Character transformation!” In an instant, Tsuna's eyebrows grow thick and his eyes wide. A tennis racket appears in his hand, and he returns the tennis ball that's about to hit him. “Wow, you're pretty good!” The seaweed-haired guy comes running over and praises him. “What do you say? Want to try joining our tennis club?” Huh, wait? What? The legendary Rikkai Dai tennis club? He's just a useless guy who can't coordinate his arms and legs! But Tsuna, in his Character Transformation version, smiles brightly and agrees at once. “Sure.” ...Wait, what did you just agree to? Don't go accepting things on someone else's behalf! * A new member joins Rikkai Dai. He used to be completely unknown and seemed utterly ordinary. But the moment he picks up a tennis racket, it's as if he's become a different person. “Exploding Tennis Ball!!” “Shigure Soen Style, Seventh Form: Swirling Rain!” “Your biggest mistake is making an enemy of me.” “...You have to endure.” “Let's give it everything we've got!!” Tsuna, who transforms as soon as he touches a tennis racket: ...You guys, stop messing around in someone else's body! He doesn't even like tennis! Still Tsuna, but in Character Transformation mode: “Hmph. I'll bite you to death.” ...Wait, who are you going to bite to death? Explain yourself! * Long story short, Tsuna successfully joins the tennis club and wins the national tournament alongside his upperclassmen. But as he undergoes more and more character transformations, his forgotten memories gradually return. In the end, all he remembers are strong hands pushing him through a safety door, and eyes stained red with blood, filled with satisfaction and hope. “Go to the peaceful new world, and live well for us.” “Decimo.” tips: 1. No romance, but Tsuna is adored by everyone. 2. The characters being out of character is only natural. If that bothers you, read with caution. 3. If they're out of character, it's my fault! You can criticize my writing, but don't criticize 27. 4. Please don't give writing advice. The author will delete comments, so be kind. 5. Mwah! Theme: Get some exercise and live well