Preparations, complete.The first one to make the gatekeeper fall off is the winner!Alright!Wha-?Deathball Fight
A pun at work here.
In Japanese, "snowball fight" is "yukigassen", written 雪合戦.
The 雪 (snow) is replaced with 逝 (die), which is homophonous.Snooow!And speaking of snow......this calls for a snowball fight!Let's duel, big sister!Gyahooo-ie!Certainly.