A baby has come to visit Ashibe-kun's house! It's Yumiko-chan's baby sister, Ruriko-chan! Ashibe-kun and his Ma and Pa are all so enamored with Ruriko-chan that Goma-chan isn't getting any attention, making him a bit grumpy. Ruriko-chan appears to like Goma-chan, but Goma-chan is irritate that she treats him like a plaything. And so the battle between Goma-chan and Ruriko-chan begins?!
Goma-chan, this is my 
baby sister, Ruriko-chan.
غوما-تشان، هذه أختي الرضيعة
روريكو-تشان
Goma-chan, das ist meine
kleine Schwester, Ruriko-chan.
Goma-chan, es Ruriko-chan, mi hermanita.
Goma-chan, esta es Ruriko-chan,
mi hermanita.
Goma, je te présente
ma petite sœur, Ruriko !
Goma-chan, questa è la mia sorellina, Ruriko-chan.
Goma-chan, essa é a minha
irmãzinha, a Ruriko-chan.
Гома, это моя младшая сестра, Рурико.