KitKat's manga / #AbusiveFiance(1)

Chap 50 Abused by a family took comfort in the Dukes family engaged to the son of the duke. The duke and duchess died due to the raining season engagement put on hold. he went to war for six years came back with a pregnant mistress. Who is the Princess of the fallen kingdom she is scheming to become the duchess. The pregnancy may be fake by use of a magic item The Emperor has took an interest in her due to her intelligence.