Certain events can't 'just happen' without certain feelings arising from them. Bakugou and Uraraka find that out the hard way and all because certain curiosities asked to be fulfilled one night and Bakugou makes the life-changing statement, "Just pretend I'm Deku so you don't play moral tug o' war with yourself." [Senior Year and Future AU; Adult-themed KACCHAKO]

Lucy and Natsu have known each other for years, facing crisis after crisis as the bond between them grew stronger. With the fall of Alvarez, life has finally begun to settle down and there's no impending doom to distract them from how much they've changed. When bottled up feelings no longer have an excuse to hide, it's only a matter of time before they reach their boiling point.