Why does he look so unhappy?

There needs to be a "suppressing an erection" tag/pool.

Ralen said:
Why does he look so unhappy?

He probably wanted to get up, but Yuki fell asleep.

And then his legs fell asleep, and are starting to tingle.

LordAnubis said:
He probably wanted to get up, but Yuki fell asleep.

When Nagato falls asleep in your lap, the correct response is to be damned grateful for the privilege.

Ralen said:
When Nagato falls asleep in your lap, the correct response is to be damned grateful for the privilege.

Lucky, lucky guy indeed.