[Himitsu no Hoshizono (Hoshizono Kanon)] Otto yori Suki na Otoko no Seishi de Haramitai

A heads up, the woman with the terminal illness is just the guy's childhood friend/girlfriend, not his wife.

So for those wondering the plot is, basically the woman is married because of her age that reach 30 and everyone ended up married and only her the one that not married yet, so she's married with a man that she's not in love in the first place, the blonde man cheating his wife because his sex drive is high but unfortunately his wife is cannot take a rough sex because her weak condition (maybe she's has terminal illness), so yeah those cheating couple ended up cheating in order to pleasing thier hidden pleasure.

The addition of the terminal childhood girlfriend was so out of left field that kinda overshadows the batshit insane FMC.

I so confused, usually I can get the gist of it but this one confuses me so mich

Damn that’s crazy she is a wrecking ball damnnnn