your boyfriend Rin died becuse of excident , his brother Sae married you becuse he promise to Rin he will take care of you, but after married he always mad at you he broke his promise to Rin

he think you are just a burden to him, you have a dissease and he always said he too busy to ecompany you to hospital

"You just make me shame becuse you are dissabled...." that word its stab your heart