Chakra exhaustion is the body's way of forcing rest. By bypassing it once a day, you effectively double your daily training volume. Naruto did this instinctively with his Nine-Tails chakra leaking through the seal. For a normal shinobi, a "Chakra Battery Seal" is the ultimate grind accelerator.
Players have reported various bugs, such as skipping necessary story beats or experiencing repeating scenes that shouldn't loop. konoha training cheat code