Comprehensive Manga: Growth Story of a Brother-Complex Younger Brother

Atobe Keigo's twin brother loves his older brother very much (pure brotherly love!). The story is about the growth of a sports-loving young boy. The early stage is more focused on daily life, the middle stage enters the main Prince of Tennis plot with elements of other manga, and the later stage might have the main Haikyu!! plot, or it might go off the rails, I'll try my best but it's still to be determined. The romantic partner is set as Yukimura, and it won't change unless something unexpected happens... If that happens, I'll say more. Also: The romance will be in the middle and later stages of the main plot, it's a slow burn and won't be earth-shattering. If you're expecting sweet lovey-dovey romance from the beginning, please ignore this. The protagonist isn't that type of character. Also, forget about passionate tennis conquering the world, the protagonist won't only join one sports club. After all, there are several manga I want to blend together, it will be more slice-of-life. Note: Slice-of-life, please stop asking me why he doesn't conquer the world, he won't. Due to work, I'll try my best to keep updating, occasionally taking days off. I'll try to update 6,000 words daily and keep it stable, I guarantee it won't be abandoned, please support me~ As usual, I'll fix any regrets I can, but not those I can't. There's no logic, just read casually.