Phantasy Star II - Yushis's Adventure

Phantasy Star II: Yushis's Adventure is a text-based graphic adventure and prequel spin-off to Phantasy Star II, released exclusively in Japan for the Mega Drive via Sega Game Toshokan. Players control Yūshisu (Rolf Landale), an 11-year-old prodigy sword fighter raised in an orphanage, who is humbled after a duel with a renowned master and trains rigorously on an island for eight years before returning. Rolf rescues his kidnapped childhood friend while uncovering deeper conspiracies tied to the planet's Mother Brain. The game features turn-based dice-roll battles, inventory-based puzzles, and navigation with character portraits and monster illustrations. Story highlights include themes of growth, revenge, and the impact of biomonster threats on the Algol star system. What makes it stand out is its intimate character backstory that expands the lore of Phantasy Star II without requiring full RPG mechanics.