Manhwa with the perspective of the ML. I believe the ML was dark haired and the FL was blonde. The ML had a second chance in life, it appears her wife killed herlself as she was unhappy with their royal life. In his second life he is living with his wife in the countryside being life farmers having a quiet and nice life. The FL suspects the ML, but the ML won't confess to her what happened before.

the empress of ashes ?

Thank you so much!!!