Please let me know how to cancel the boost mode subscription.
This subscription must be canceled at least 24 hours prior to the expiration date.
Cancellation may be completed through the following procedure.
1. Tap Settings > [your name] > iTunes & App Store
2. Tap "Apple ID" at the top of the screen.
3. Tap "View Apple ID" then "Subscriptions"
4. Tap "Boost Mode" purchased on "SWORD ART ONLINE: Integral Factor" to see the purchase history.
5. Cancel subscription by tapping "Cancel Subscription"
*Please be aware that even if you cancel this subscription, you will not receive a refund for the remaining validity period.
*When canceling this subscription, you will still receive the boost effects until the end of the validity period.