Him getting jealous of himself and the feelings that she has for him that she's keeping hidden hopefully just for now reminds me of full marks hidden marriage lol (at least the novel version, don't know if it was changed up in the adaption)
And niti :c figured someone would get sick as soon as it was mentioned, but why did it have to be him :c At least this doesn't seem like the kind of series to be like "it's fine, we can make another"...