Not fully- Jesus karel is going too far okay. But Sasya is not of sound mind, (neither is Karel but he can at least see reality) and a lesson like this just might stick. I know we should treat mentally ill people as people but what do you do if you don't even live the same reality? I think bc we see Sasya living normally most of the time that people forget that he is mentally ill so they give him more credit. Being mad at Sasya for doing illogical things is like being mad at a cat for bringing you a mouse.
He's so spineless and his personality is all over the place. It's like the author doesn't care if he has a cohesive personality at all, the author will make him do anything as long as it can get the plot from point A to B. This is the kind of MC modelled after 90 's shoujo protagonists, who is a doormat, a saint and the bravest person all at the same time. Those shoujo girlies were definitely on crack and so were those authors (╯°Д °)╯╧╧
In real life I think jealousy is off-putting but shima being impatient and demanding time with her is so heart melting