I Will Take Responsibility for the Welfare of the Male Lead

Reading I Will Take Responsibility for the Welfare of the Male Lead manhwa, I Will Take Responsibility for the Welfare of the Male Lead manga with alternative name: Writing My Male Lead’s Happily Ever After / 我来负责男主的福利 / 남주의 복지를 책임지겠습니다 with Description: A madman with a tragic childhood and a disease that brings on insanity, destined to fall obsessively in love with the saintess of the holy nation… This was the male lead of the melodramatic novel I wrote. He is also the very person who kills Laria Sherwood, the villainess I possessed, and whom must stay away from to survive… or so I thought, until I saw the terrible reality I created. I suppose, as the author, it wouldn’t hurt to teach him how to love, then leave right when the female lead appears, right? But will it be as easy as I thought?