I'll catch up to you. Have I ever broken a promise to you before? Episode 8

During summer break, while spending his holidays with Okiku and Rin, Souta is kidnapped by Riru and brought to Akane's house, to fulfill Akane's wish to meet him. As a result, Okiku, Rin, Megumu, Mei and Kurumiko went to Akane's house. Nanami, knowing the Quest Dorm members are at Akane's house, are frustrated because she wasn't invited as well. Thus, the Quest Dorm members (plus Ruri) decided to meet Nanami at her country in Principality of Bladefield. On their way to the capital, Twinblade, Souta met Hakua, the 14th Princess of Bladefield, Nanami's half-sister. Later they are being chased by Ruri's clone, which is programmed to assassinate Hakua and Nanami. Souta felt his power increases again and used his own power to save both of them from the assassination, though that makes them separated from the main group.