The Welsh language book follows the adventures of Seren and Sbarc as they follow the Welsh rugby team to Japan, and try to save the Universe Cup while avoiding ninjas, robots, and robo-ninjas!
Mae’r llyfr yn dilyn antur Seren a Sbarc wrth iddyn nhw ddilyn tîm rygbi Cymru i Siapan, a cheisio achub Cwpan y Bydysawd gan osgoi ninjas, robots, a robo-ninjas!