wasn’t the kiss supposed to be with tongue

Back in ch60/61 if I remember right from the novel Sayoung kissed J on the forehead as well, but not in the manhwa.

I think they may simply slow down their romantic progression a bit. Having them in a full sloppy Makeout session in this serious scene would feel a bit weird, especially with the pacing the manhwa has going.

In the novel it felt less out of place because we got a better build up towards it through internal monologuing etc