A lot depends on which Deku you're writing, honestly. Early-series anxious cinnamon roll Deku versus the later, more battle-hardened version invites totally different dynamics. Izuku and Ochako tends to follow the classic friends-to-lovers path, heavy on mutual support and soft moments, which is great comfort food. The real explosion, though, is Deku and Bakugou. It's a narrative goldmine—years of shared history, rivalry, guilt, and explosive emotions. It's less about romance sometimes and more about two forces crashing into each other until something gives.
Then you've got the wilder stuff. Deku and Shinsou plays with the brainwashing-quirk angle, often exploring themes of trust, control, and vulnerability in really dark or surprisingly tender ways. Deku and Todoroki is another big one; the 'saved you to save myself' trope gets a workout there, mixing trauma bonding with quiet domestic scenes. Honestly, I think the popularity of a ship often boils down to what emotional need it fulfills—redemption, healing, rivalry, or just pure, uncomplicated comfort.