Interesting power: MC can see floating words related to a person's actions, thoughts and feelings.
Nice MC: not dumb (neither by nature nor bc of love)
Non-physically-normative omega, it's addressed quite a lot.
(Good sex scenes)
Healthy version of Painter of the Night
Size difference
A classic. Has an anime adaptation and the story continues under other names
Novel adaptation.
Character with stutter (no "fixed by love" trope); follows various years; couple laughs a lot together
Only problem: we don't get the ML confessing his romantic love, their relationship just becomes gradually romantic/sexual after MC's confession
Novel adaptation (which you can officially buy in english!).
We have a long journey ahead for the following problem to appear but: is shown ML had a time of obsession with MC centuries ago. Still including the manhua because it's shown ML respects MC and doesn't admire him, but yeah. There is that in the future. If it helps the author is aware of this
One of my ongoing favs
Light story, a bit of size difference, cute mc, ml falls in love first
Walk on Water