any spoilers please? will this be a bad ending, happy ending or open ending?

id argue its an ambiguous ending but still happy? they do end up together, mc accepting ml as he is with his mental illness and making sure to tell him that he can handle his mental illness after ml asks him if he really wants to and if he's completely sure but at the same time im saying its ambiguous bcs they obv would have many hardships due to his mental illness so u can view it however u want: if they had a truly happy ending where his mental illness didnt affect them anymore or if their ending is more of a co-dependent "happy" ending where his mental illness drains the other still and the relationship is very rocky if u want i can give u the raws for the last chapter