Ace of Diamond: The Strongest Catcher of His Generation

[No Romance + Original Protagonist + System + Coming-of-Age + Inashiro Route] In his previous life, Baisou's health and family circumstances left him with no choice but to become an ordinary office worker. After working overtime all night, he stayed up until ten the next morning to get tickets for the Koshien final. When he saw the message confirming his successful purchase, he got so excited that his heart stopped. In his final moments, as his consciousness faded, all he could think about was going to see Koshien.

System 221, which had been watching him for a long time, took in his soul. After striking a deal with the world's consciousness, it immediately dragged its Host's soul into the world of Ace of Diamond.

Reborn as Ijuin Sota, he carries his love of baseball into this new life. He brings Sawamura along with him and joins Inashiro. With the System's help, he meets Chris and gradually catches up to Miyuki Kazuya, partners with a pair of left-handed pitchers, and grows step by step into the strongest catcher of his generation. Along the way, he sees sights he never got to see in his previous life. The more he experiences, the less he can stop, and the road to Koshien shines ever brighter. His goal: storm Koshien and claim the national championship!!!