S4·E110 The Secret of Merone Base
Aired November 29, 2008
Synopsis
Ryohei defeats Baishana and his box weapon with a move called "Maximum Ingram". Back at the Vongola hideout, Haru is worried about Tsuna and Kyoko is worried about her brother. Ryohei, Gokudera, and Yamamoto continue their way into the base but suddenly the base starts to move.