Based on experience, the most intense shock in the Netorare genre happens when no one expects it! It's like the first time we didn't know something called Netorare existed in adult media, and we didn't even know what it meant
But suddenly someone approaches FMC... your heart rate goes up... they touch it... you can't believe it, you think to yourself, "Is this even possible? This is impossible..." and it continues moment by moment
These things happen because you know nothing about the future, you didn't expect this at all, and it makes you freeze in place...