: Complete "Kaguya, the Violent Goddess (Part 2)".
If you own the Road to Boruto expansion, the fastest way to unlock the new generation characters is by playing the expansion story mode. Most are unlocked simply by beating the story. : Complete "Kaguya, the Violent Goddess (Part 2)"
A: Only for "Night Guy" (Might Guy). For everyone else, play on Easy to speed through. : Complete "Kaguya
Playing through the main Story Mode is the intended way to unlock characters. Specific chapters trigger certain rewards: Requirement Rin Nohara Complete "Boys in the Midst of War" (Berserk) : Complete "Kaguya, the Violent Goddess (Part 2)"
: Set up a 1-round Free Battle against the CPU with the handicap set fully in your favor. Use a powerful character like Sage Mode Naruto