It ensured Wales finished in third place and they will head to the Junior World Championship in New Zealand this summer in high spirits - and none more so than Otten.
"Richard Hibbard been outstanding over the last few years," said Otten. "From the way he carries the ball to the way he scrummages, his work rate is unbelievable.
"Coming through the age grade system at the Ospreys academy, Richard has always helped me in one on ones on technique, throw-ins and other aspects of the game, as he has with the likes of Scott Baldwin and Matthew Dyer too, it's a brilliant environment to be part of
"Personally I loved every minute of it. Any guy who puts this shirt on is passionate about playing for our country, once you have the three feathers on your chest, it's something special.
"I had 22 guys around me who I really believe are good enough for this standard so it was a brilliant feeling for my first start. The forwards dug in deep again, the scrum is a weapon for us so we knew we had to put in a good shift."