ダイヤのA（Ace of Diamond）【1】

中学全国大会を目標としていた沢村栄純。最後の大会は自らの暴投で敗退してしまう。仲間とともに高校でリベンジを誓うなか、名門、青道高校野球部からスカウトが来る。見学に訪れた沢村は、いきなりエリート校の洗礼を受けることに！　名キャッチャーの呼び声高い御幸との出会いが沢村の高校野球への情熱を目覚めさせる！！

Eisai Sawamura who was aiming for a junior high school national tournament. The final tournament will be lost with their own assault. Scouting comes from a prestigious high school Baseball club, while pretending to revenge in high school with his colleagues. Sawamura who came to visit suddenly got baptized by an elite school! Calling by name catcher Encounter with Higoyuki awakens passion for Sawamura's high school baseball! It is!