After Nobunaga turned the world upside down at Okehazama, what happened to the five pages after the historic battle? To tell you the truth, a sad one.
In 1561, Iwamuro Nagato no Kami was killed at Okuchi (Okuji) and the other four were killed fighting at Mikatagahara in 1572. Gato Yasaburo, Hasegawa Hashisuke, Sawaki Tohachi, and Yamaguchi Hida no Kami were killed in action.
Taniguchi Katsuhiro's Nobunaga no Shineitai, pages 214, 224, 233, and 239 has some information on the four. Also if you read Ota Gyuichi's Shincho-Ko ki on the Battle of Mikatagahara, the four are mentioned as well.
Tenka no tame!