The guys forgot to lock their napping compartment, allowing the bad guys to nab them when they’re most vulnerable and subject them to…experiments.
Preview of NSFW version of the previous Shinkalion pic, full size set are Patreon only : https://www.patreon.com/Rx26
Piloting giant trainsformer™ robots is a tough job for these guys, so there’s a special compartment in the train for them to rest in after a hard fought battle!
It’s barely enough space for 3 people though, but these guys are just too tired to care!