Oki Ni Mesu Mama
Chapters1-5: a promiscuous prince needed a bride and sets a condition to be the bride, unfortunately the male foreiner swordmaster was the chosen so they became a couple but the print from another country who the swordmaster is indebt to was in trouble so the couple travel to another country to save the prince and after the matter was settled, they return to the palace. Chapter 6: (this story was included in Koi wa Maio) The youngest prince luke the messenger with crimson eyes but because of the status and the messenger guy thought that the prince only liked the crimson eye because the servant of the king which the prince liked before, also have same eyes.
Koi wa Maiorita
Chapter 1: Arranged political marriage between 2 families, at first they were against it then give in as they discovered their feelings for each other but since the "wife" couldn't produce an heir, the prince had to produce by having concubine but that difficulty doesn't affect the couple so it ends well. Chaprer 2-3: The forbidden love between 2 people from 2 different place divided by a strong barrier, they struggle the hindrance and found out that the sickly boy's parents actually from 2 different place, since the boy isn't sickly when on the other side he stayed there while visiting his grandpa on the main side on mornings. Chapter 4: The prince was looking for his belived bodyguard for 3years and retrieved him after telling the issue that the so called rumors about the prince having an heir was infact from his brother's lover not his' so they returned to the palace and live happily. Chapter 5: A prince caught up with political manipulation that stirs up people to rebel against the kingdom, through that incident his father was killed by his beloved servant but later accepts the situation as he still have feelings for the servant and so the servant became the emperor; thus the story how the country of kou begun.
Sabishigariya wa Yume o Miru