Kekkon Yubiwa Monogatari

When Satou's best friend, Hime, tells him that she's moving, he decides to follow. After crashing her wedding in another world, he ends up as the groom when she suddenly kisses him! Prophecy states that her husband is destined to be the Ring King-a hero of immense power who will save the world from the Abyssal King! Is Satou up for the challenge, or is his new marriage going to end before it even begins?

(Source: Yen Press)

Note: Includes two extra chapters.