Warrior Kero III: Big Explosion! Critical Time For Momohime, de gozasourou (武者ケロ 参の巻 大爆発!桃姫危機一髪 でござそうろう,Musha Kero: San no Maki: Dai Bakuhatsu! Momohime Kikiippatsu, de gozasourou) is the 231st episode of the anime Keroro Gunso.
The platoon sets off to find the third crystal weapon which is in Princess Momo's castle. They manage to get past the guards disguised as mail carriers with O-Mois. They also find out that the only reason that this place is so perfect is because Princess Momo agreed to marry the oldest warrior Viper brother. The real truth is that Princess Momo really loves a boy that works at a fireworks shop nearby. The platoon is also informed by Dororo that the 3rd crystal is in one of Princess Momo's wedding gifts. They soon take Princess Momo and her wedding gifts away from the castle being unaware of the bomb strapped on the carriage they were carrying ( which was set on by the fireworks worker boy that was used to kill the warrior Viper brother) but they were told by Kururu before time ran out. Soon, the platoon and Princess Momo survive by nearly a close second. But soon, they are attacked by the Viper brother. After a harsh battle with a dark and angry Princess Momo, the warrior Viper grabs her but is stopped when he shot by Tamama 's Tamama Impact. Soon, the 3rd legandary weapon is revealed as an armored glove in the form of a tiger. Tamama uses this weapon to defeat the warrior Viper brother and send him flying into the stars. Now the search for the 4th weapon is on.