2-dome no Futari

Miku lives happily with her husband, Sho, a kind man who even helps around the house without being asked and excels at his job. As they get closer to their second anniversary, Miku spots Sho walking along with another woman. At first, Miku tries not to jump to conclusions, but from then on, Sho keeps his phone with him at all times. Then, on the day of their anniversary, Miku witnesses him together arm in arm with the same woman. The instant she takes out her camera to obtain proof... she's struck by a truck! (Source: MangaPlaza)