A birthday gift from Nise_Hamtaro of Twitter that was originally sketched by him and I just inked & colored. Thanks again, and it's so cute! >w<

Basically the translation reads:

Penelope: 「うきゅ〜っ」 "Ookyoo~"
Sparks:「サンちゅ、ちび丸ちゃん」 "Thank chu/Thank-Q Penelope"