Chin laughed again and grabbed Ranma's arm and dragged him over to Athena
and Akane.  "My boy, your father lost a wager with me some years ago... and
in order to make good on that promise, you and Athena are to be
married!"  He gave Ranma a shove and sent him almost tumbling into Athena.

This won't work, mainly coz 1) Chin would never have made such a promise to
Genma in the first place, considering that 1a) he isn't their parent and 1b)
he may not have had Kensou and Athena as pupils back then. Also 2) Athena
has one major crush on Kyo, 3) Kensou has one major crush on Athena and 4)
Genma is going to get crushed, literally ;)
      K  u  s  a  n  a  g  i       K y o
      --|---|--    --|---|--     ----+----
       +-----+     /-, +-+-       +-----+
       |-----|      |  |-|-       |     |      
       +-----+     -|- |-|-       +-----+
      ----|----    / \ +-+-       /  J  \
 -----------------------------------------------
  "Kusanagi Flames, Yagami Tears, Orochi Blood"