Haikara-san: Here Comes Miss Modern Part 2 (2018)

After marrying the head of the military, Benio hears her husband died in Siberia during a war. However after finding out he's alive and fighting against his home land, Benio starts looking for her first love. Wondering why he didn't return and wanting to welcome him back. Hardships will happen and hearts may be broken, as he might have moved on.