kimochi-yoku-doraemon.png

Translation

• e wo kaite-iru no.
  絵をかいているの。
  Are [you] drawing a picture?
• un, hisashiburi ni kimochi-yoku kaketa
  うん、久しぶりに気持ちよくかけた
  Yes, for the first time in a while [I] was able to draw feeling good.
  • i.e. for the first time in a while, he was able to enjoy himself drawing.
  • kaketa - past form of the potential verb of kaku 描く, "to draw."