AIJIN WO KAKOU REITETSU NA HAKUSHAKU TO NO TENKEITEKI NA SEIRYAKU KEKKON, SOSHITE KIRAWARE KARA NO DEKIAI, SONO KETSUMATSU.

A man seeking family background, a woman seeking financial support. It was supposed to be a loveless, arranged marriage. But Renande falls in love with his wife, Elise, who is pure and kind to everyone, and the two begin a happy married life. But the story doesn't end with a happy ending. (Source: Kadokawa, translated) — Description from AniList community (anilist.co).