PoPoLoCrois: Hajimari no Bouken

In the fifteen years after the events of PoPoLoCrois 2, Pietoro and Narcia profess their love for each other and birth a son, Pinon. As King and Queen of PoPoLoCrois, the two parents have not only given Pinon life and a title, but also the power of dragon and fairy. One day, however, Pinon does some exploration and uncovers a threat to the kingdom that forces him to take up his sword and defend it. And such is the speedy premise behind PoPoLoCrois: Hajimari no Bouken; the fourth game in the popular RPG series spawned by Sugar & Rockets before its demise in 2001 and the first to implement the advanced cel-shading techniques made possible by the PlayStation 2 hardware.

Source: TheGamesDB