Hoshoku-sha Kisumi-kun
Omae no Tame ni Houritsu Kaetakara, Ore to Kekkon Shitekure
Childhood friends agreed to get married. Uke tells seme that they can't marry because the law doesn't let men marry men. Seme tells uke he will change the law so they can marry.
19 Days
@ch 447 1st Couple - Childhood friends, uke has connections to 2nd couple's seme's brother's/mafia 2nd Couple - Delinquent uke, poor but works hard for money, not very smart, seme is mafia's son, has rich brother, good looking All are friends and go to the same school.
What Happens When a Handsome Gangster Starts Keeping a Straight Man on a Short Leash
Senya Ichiya Romanesque
Uke met seme prince a long time ago and were childhood friends. Years later, uke's sister has a marriage interview to marry seme but seme actually liked uke for al these years. Uke agreed to be seme's wife when they were younger and seme wishes to follow through with promise and marry uke. Sister is aware and doesn't care.
Zan'nen Datta na, Unmei da!