The Sun God's Virtual Teammate Has Appeared

A crossover mainly focused on Haikyuu!! The protagonist is Shiraha Yuma, paired with Hoshiumi Hirugami. Main setting: Kamomedai.

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What?! How could we run into each other like this?!

On the first day of his first year of high school, Hirugami meets someone he never expected to see: Shiraha Yuma, the virtual teammate he raised from childhood.

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Since his family members are all volleyball players, Hirugami has been playing volleyball since he was little.

Then one day, he gets a volleyball game and raises a sweet, gentle little kid named Shiraha Yuma.

The kid is well-behaved from the start, follows Hirugami's advice, and becomes a setter.

Hirugami finds it fun. Whenever he has time, he logs in to teach Shiraha Yuma volleyball, even sacrificing sleep to play virtual matches with him.

He likes Shiraha Yuma, probably because they've been together since childhood and Shiraha Yuma's sets are exactly to his liking. Sometimes he thinks: If only Shiraha Yuma were a real person.

He never expects that one day his wish will come true!

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Shiraha Yuma used to be an ordinary kid. Then one day, he gets a volleyball System and decides he's no longer ordinary. He thinks he must be the chosen one, destined to become a superstar in the world of volleyball!

But what he doesn't expect is that he isn't especially talented. Looking at the talent rating of 6 displayed by the System, Shiraha Yuma decides he's been given an underdog's comeback story and that, with hard work, he'll surely become an excellent volleyball player.

And so Shiraha Yuma trains day after day, joins the volleyball club, and gives his all in every match. In the end, he only manages to take second place.

Unwilling to give up, Shiraha Yuma decides that in high school he'll get into a powerhouse volleyball school and win a championship alongside formidable teammates.

He never expects to run into his System, Hirugami!

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At Kamomedai High, Shiraha and Hirugami stare at each other in astonishment. "Hirugami/Shiraha, what are you doing here?! Wait, aren't you...?"

What?! My System/the kid I raised is alive?!

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Reading notes:

1. This story combines Haikyuu!!, Detective Conan, The Prince of Tennis, and other series. The early main story focuses on Haikyuu!!, while the later part focuses on Detective Conan. It is divided into a long coming-of-age arc (their youth) and a professional arc (adulthood).

2. The protagonist is Shiraha Yuma, from Kanagawa. His childhood friends are Hagiwara and Matsuda (Detective Conan), his friend is Yagyu (The Prince of Tennis), his love interest is Hirugami (Haikyuu!!), and his rival is Sakusa (Haikyuu!!).

Theme: Face everything with optimism