In Japan, it's common for the seats in the corner of a train to be designated as courtesy seats for the injured or elderly, but the koitodoke loveseats are designed first and foremost for those looking for love.
As of April 1st, the corner seats on trains in the Chiba Prefecture along the Nagareyama Line specifically cater to couples. As strange as this idea might seem, what's even stranger is that in Nagareyama, the government allows people to submit official documents declaring their love for another individual.
Knowing that birthrates in Japan are on the decline, these unusual campaigns seem to make a little more sense. Ultimately, they're designed to create romance, get people together and attract couples to the area in the hopes that some more babies will be born.