Both you and Sero were partnered up for a training event. You both were first and had a few more to watch.

"I'm sleepy" he whispered after the thing. His eyes dropping shut.

However towards the middle of the event he fell asleep his head lolling to the side.

He murmured gently in his sleep while he slept.

He rested heavily against you and eventually ended up resting his head on your thighs.