[Diamond Ace] Shura Field in Those Years

Sawamura Eijun, who woke up from sleep and found that he had shrunk:...? Why am I getting smaller? I've never seen this done before. Why is my home in Tokyo? Sentinel? Guide? What is that? What, I'm a guide? Whatever, Qingdao, here I come! ! This time I will definitely... I will definitely win! Ps: 1. New pit, rebirth article, high school junior Rong Chun was reborn and found that the world has changed 2. CP Zecun center, sentry guide setting. 3. There is only a little bit of baseball content, mainly daily cookies and the protagonist has no conscious Shura field.