I was thinking that too. Like make him fall for you and then die
though we don't really know what the details he had in mind
1- He never knew the guy was falling for him
2- He didn't tell him he was going to commit suicide. He did leave the uke contact info in case something happened to him. So he probably was going to kill himself, and thought the uke would be the one to find his corpse. Or he would kill himself after cutting ties with the uke.
So it's left vague.
Personally, I didn't really like the plot of the last one, though i glad they ended up together but I felt that if actually he had one month to live... and he died. Which would be extremely sad.... or if to ease things up, he may reveal to the uke that he needs a kidney and they couldn't find a match for him. Weirdly enough the uke matches and donates to him. I like both concepts XD
However the second one the only thing that irked me was what if he really committed suicide because of the guys action did he ever think how that would completely scar him..... lucky that didn’t happen and they ended up happy..