There's a key/latch on the side under the fairing.
unbolt it
Yes, it has a back seat.
To remove the back seat from a 1997 Honda Odyssey the seat locks need to be opened. When the clips are unlocked the seat will be able to be lifted up and removed from the vehicle.
Under the rear seat
Under the front seat.
how to remove 2004 scion back seat
Under the seat
Remove the bolts holding the seat on each side and then slide the seat back.
behind driver and passenger seat under the carpet
Loosen and remove the two Allen bolts at the rear end of the seat. Then, pull the seat back and upward.
Just under the back of the seat.
A front passenger seat on a 2005 Honda Civic is held on by four bolts. Pull the seat back to loosen the front two. Pull the seat forward to reach the two rear bolts. Remove the seat.