
Yeah, but this isn't a one-off. Nearly every romance isekai/reincarnation manhwa suffers from the same. Its rare to find a FL that is tall enough to come close to reaching the ML's shoulders. A LOT of them reach the ML's midriff at best. And don't get me started on the widths. 3 FLs side-by-side would reach the span of the ML's shoulders. If its a highly stylized manhwa where proportions are off by design (how to train your dragon style) it would be fine. But no. Its just a template, all kids under 12 are toddlers, all FLs are pale and diminished wisps of humans, and all MLs are boulders with black hair and red eyes.

I don't mind the height difference, plus it is clear that ML is taller even than most knights, that is the intellectual freedom of the author, what I find concerning was that particular frame, that she didn't even reach his sternum if she stood (he was holding her bridal style) so I bet that was a mistake from artist.
What is with the all the manhwa's obsession with making the ML massive compared to the FL?? CAN THE FL LOOK LIKE A GROWN ADULT FOR FUCKING ONCE?!!?! The panels of him carrying her? She looks like her head would reach his waist tops. It looks like he is carrying his pre-pubescent niece. PLEASE. I'm begging. Make the ML and FL look compatible in size.