
1. Consent isn't perpetual.
2. It doesn't make it fine just coz he's his partner.
3. How you want to perceive this particular scene is subjective. Some people think it's fine some people think it's not. Ideally, don't jump your partner in their sleep. But if they're into that shit no harm no foul. Talk to your partner and set your boundaries and limits.
4. This is a work of fiction meant for the entertainment of readers do not rely on this to make sense of reality. Don't expect it to meet the standards of reality. If the author wanted to do that they'd write a book on ethics and morality not a smutty manhwa.
Peace out
You never gave him a reason to smile like that for you ! Go cry in another corner ( ̄へ ̄)
Keep suffering bish.