At this time every year, Tama and the others are confronted by their old enemies - koinobori - carp windsocks. This year, Tama and friends come up with a plan to finally defeat them, and challenge the Okamoto family's koinobori to battle!

Tora goes to the park where Tama and the others are playing, bearing huge news - Bull has grown bigger than a human. Shocked, Tama and the others go to see Bull and they find...
"The day Bull cried."
".اليوم الذي بكى فيه بول"
„Der Tag, an dem Bull weinte“.
El día en el que Bull lloró.
El día en el que Bull lloró.
Le jour où Buru a pleuré.
"Il giorno in cui Buru ha pianto".
O dia em que o Bull chorou.
«День, когда заплакал Булл».