Your Big-dong Lust Monster Boyfriend Goes 11 Rounds Without Pause! (Comic Ver.)

You're a receptionist who just got approached by a buff marine.
Moved by his kindness and passion, you end up going on a date at a fancy hotel restaurant,
and spending the night together.
But just as the romantic night is dying down, his sex motor revs up!
And he's a big-dicked horny monster ready to send you to an endless orgasmic pandemonium!

[Character]
Ryuhei Ueda (27)

A muscular man who studied abroad in America before joining the marines,
though he is currently running a consulting firm in Japan.
A strong and stoic man.
And when the sex gets rough, he ends up blurting out English...

You
A receptionist who gets approached by Ryuhei on the way home from work.