This game uses a real-time sysconfig timer. Your affection values are tied to the device's system clock. The sysconfig file contains timestamp_last_message variables. If you edit these to appear as if you replied instantly (instead of 8 hours later), you can trigger romantic routes that are normally impossible for working adults. Modders have found flags like chat_participation_percentage – set it to 100% to unlock the secret "Ray" ending without losing sleep.
within interactive Android games (often found in visual novels or dating simulations), here is a review of how those "system configurations" typically function: Android Romance System Mechanics sextube sysconfig android