Naruto Shippuden Ultimate Ninja Storm 4 Mugen Apk Upd
Unlike many gacha mobile games, this APK is fully offline (after installation). You can play vs CPU, arcade mode, time attack, or two players on one device using Bluetooth or touch screen division.
If you want the real Naruto fighting experience on mobile, try these instead:
Shadow Fight 3/4 (Not Naruto, but similar combat style)
PPSSPP Emulator + Naruto Shippuden: Ultimate Ninja Impact
Steam Link / Xbox Cloud Gaming
Because the "Upd" focuses on performance: