Have you read this one? ٩(๑❛ᴗ❛๑)۶: http://www.mangago.zone/read-manga/hanayome_kun/
I see.
Guess it's sort of similar as Goshugi (Gift Money) for them? LOL.
(Copied this online:) *Japanese Weddings*
"Money is a very common gift in Japanese weddings. The groom's parents traditionally give the bride's family money in ashugi-bukuro, or special envelope. The envelope is elaborately decorated with gold and silver strings twisted and tied into a decorative knot. Japanese folklore says that the knot is supposed to be impossible to open. The amount inside is usually quite generous—three months of the groom's salary or a set amount of 500,000 yen (about $5,000). Most grooms don't get to keep the whole amount, which is seen as a family-to-family gift. But the money-giving doesn't stop there. Guests also give cash gifts to the bride and groom. A friend may give about $300, and an especially close friend may up the sum to $500. Bosses, uncles and aunts may part with up to $1,000 for their favorite couple. The gift-giver's name and the grand total of the cash inside is written on the outside of the envelope."

Just when you thought you’ve read it all and then BAM a family that buys brides, people that casually has crows on their shoulder and talking to fucking messengers of god