On PC, the Auto Battle shortcut is H. Press it once to start auto-battle and again to stop. Japanese guide GameWith reports that the skill icons glow blue while the feature is running, which is the simplest way to confirm it is active. On mobile there is no keyboard key: you enable a combo setting first, then tap an on-screen battle button. A third-party controller table lists R1+R3 for controllers. That mapping is reported rather than confirmed by an official page, so check it in your own key settings.
Where the shortcut is and how to confirm it is working
The default binding is the one most players will look for first. The sources below agree on H for keyboard play, but none of them is an official control reference, so treat the key as the default you should verify rather than a permanent setting.
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PC keyboard: press H
- Enter a field, dungeon, or other combat area so your character is in an active fight.
- Press H. Auto-battle starts and your character begins using designated skills on its own.
- Look at the skill icons on the hotbar. In GameWith’s description they glow blue while auto-battle is active. If they do not, the toggle did not register.
- Press H again to stop. Manual input resumes.
If H does nothing, open the key settings and check the binding listed as Auto Battle. Raison Detre’s keyboard and controller guide describes this same H binding and explains where to inspect it. Rebinding the key there is the fix if H conflicts with another action on your setup.
Mobile: enable the combo setting, then tap the battle button
Mobile does not use the PC shortcut. Activation depends on two steps:
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- Open the in-game settings and turn on 一括コンボ (all-in-one combo).
- In the combo settings, choose which skills auto-battle may use. GameWith says all skills are selected by default.
- During combat, tap the 一括バトル (all-in-one battle) control on the battle screen to start auto-battle.
The labels above are the Japanese in-game terms as GameWith gives them. If your client is in another language, look for the equivalent combo toggle and battle button in the same menus.
Controller: R1+R3 (reported)
A third-party control table lists R1+R3 for auto-battle, where R3 means pressing the right stick. This is a reported mapping. Confirm it in the controller section of settings before relying on it, because button layouts and custom bindings can differ.
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Quick comparison by platform
| Platform | How you start it | How you confirm it is active | What to check first |
|---|---|---|---|
| PC keyboard | Press H | Skill icons glow blue (GameWith) | Key settings: the Auto Battle binding |
| Mobile | Enable 一括コンボ, then tap 一括バトル during combat | Battle controls show the auto-battle state; skill list is set in combo settings | Which skills are selected in combo settings |
| Controller | R1+R3 (reported by a third-party control table) | Not stated by the source | Controller bindings in settings |
The PC and controller entries depend on the sources named above. The mobile method is the only one described as a two-step setup.
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What auto-battle does and does not do
Auto-battle is a rotation aid, not a way to play a fight unattended. Prydwen describes it as using the skills you designate automatically when they come off cooldown, following basic logic tied to your class. GameWith says it can avoid some attacks but not all, and it recommends against relying on it against dangerous enemies or bosses.
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Prydwen’s beginner guide, last updated 2026-01-18, adds that you still need to move out of boss mechanics, parry, and dodge yourself. It also reports that poor pathfinding can cause problems in some dungeons, so you may need to take over movement there. GameWith’s guide, last updated 2026-09-30, is the most recent of the three.
Set skill use before you turn it on
GameWith warns that stored ultimate and Battle Imagine skills may be used as soon as they become available, unless you disable them in the combo settings. This matters most on mobile, where skill selection is set through 一括コンボ. Review the list before a difficult fight, since a powerful skill spent early can leave you without it when a boss mechanic needs it.
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If auto-battle does not respond
- PC: confirm that the Auto Battle binding in key settings is H, and that no other action uses the same key.
- Mobile: confirm that 一括コンボ is switched on before looking for the battle button.
- Controller: confirm the current mapping in settings, since R1+R3 is a reported chord.
- Any platform: make sure you are in combat. Toggling the feature outside a fight is not a reliable test.
Sources used
- GameWith, “How to use Auto Battle and cautions in Blue Protocol: Star Resonance” (Japanese), last updated 2026-09-30. Covers the PC shortcut, the mobile setup, skill configuration, and cautions.
- Raison Detre, “Blue Protocol: Star Resonance keyboard and controller settings” (Japanese), page dates 2025-12-25 and 2026-01-21. Lists H for keyboard and R1+R3 for controller.
- Prydwen Institute, “Blue Protocol: Star Resonance Beginner Guide,” last updated 2026-01-18. Describes auto-combat behavior and its limits.
No official first-party control page was located for these details, so the bindings above should be checked against your own game settings.
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