Is It Really Serious to Play Volleyball While Disguised as a Boy?

[Every time I open the comments on my previous volleyball novel, they hurt me all over again. It's gotten to the point where I can't even get excited about volleyball anymore. This is painful. I'll start writing again once I get my groove back.] This is bad. On my way home from school, I got hit by a System. System: So, here's the thing. You're going to become the champion of the Spring High boys' volleyball tournament... Me: ? Wait, I'm a girl! System: Huh? You really are! System: Oh no, I bound the wrong person. I mistook you for your older brother! Me: ... Here's what happened. For some extremely fantastical reason, I had to disguise myself as a boy and enroll at Aoba Johsai in place of my twin brother, under his name. Even though the whole thing was ridiculous, life here was actually pretty nice. Every day, I'd stretch and work out with my teammates, getting a feel for the muscles and youthful energy of all the high school boys. Until one day... Thinking everyone else was gone, I sneaked into the locker room by myself and was just about to take off my clothes when my teammates walked in. "Huh? You're already in here?" "Why are you being so secretive? You don't have to bundle up so much just to change. Aren't you hot?" "Come to think of it, Xiao Liang never changes with us. Why is that?" They all chimed in, and before I knew it, the flirtatious, handsome captain, Oikawa, was about to come over and throw an arm around me, the way boys do when they're fooling around... I looked at my bare shoulders, covered my chest, and shouted in a panic, coming up with the first thing that popped into my head: "Don't come any closer!" "B-because... I'm gay!" As soon as the words left my mouth, the entire locker room fell silent. Reading guide: 1. Disguise yourself as a boy and play volleyball at Aoba Johsai. 2. This time, the story focuses on Aoba Johsai and Shiratorizawa, with a little Karasuno and Inarizaki. Theme: Train hard and keep improving every day.