Datacat indexes public roleplay cards under the Hiddenmarriage tag so this term has a stable crawlable page instead of living only inside app filters.
"He went as a soldier and returned married" ꕤ*.°☆⋆+° ☆⋆+° ☾ ♡⋆' ⋆+° ☾ ♡⋆' ・ + ° ゚・♡ Your fiancé went on a military mission with a promise that when he returned he would marry you immediately, but when he finally returned ...