In Oukyuu no Koibitotachi Series (王宮の恋人たちシリーズ), also called the "Diamond Brides" series:

1. Totsuzen no Princess (突然のプリンセス; The Royal Marriage Arrangement) by Rebecca Winters and MORI Motoko:
   A royal wedding is announced, but this crown prince has made a convenient proposal...

The crowd is cheering the royal newlyweds. Crown Prince Lucca has married Alexandra Grigory in a sumptuous wedding. On the arm of her magnificent prince, Alexandra looks lovingly into his eyes. If only her convenient groom felt the same way she does!

From the tip of her diamond-encrusted tiara to the toes of her satin slippers, she looks every inch the part. But she knows that only the love of Lucca will truly make her feel like a princess!

2. Koi no Princess (恋のプリンセス; Italian Groom, Princess Bride) by Rebecca Winters and MORI Motoko:
   The princess and the gardener!

Princess Regina Vittorio must soon leave her beloved kingdom of Castelmare and become queen of another realm. Gina has devoted her life to royal duty, but as the day of her arranged wedding approaches, she wants just one moment with the man she loves....

Royal gardener Dizo Fornese has watched Princess Regina blossom like the roses he tends at the palace. He knows she is untouchable, but he has one chance to risk all -- and claim his princess bride!