Zwei II is a Japanese role-playing game developed and published by Nihon Falcom exclusively in Japan on September 25th 2008. It is a direct sequel to Zwei: The Arges Adventure. An enhanced version, with additional features and an English translation, saw a worldwide release under the name Zwei: The Ilvard Insurrection through a collaboration between Nihon Falcom and XSEED Games on October 31st 2017.
Source: User Summary
Players alternate between two main characters Ragna and Alwen, with two other supporting characters replacing Alwen at certain points in the game. Ragna is adept in physical attacks, fighting with his unique Anchor Gear weapon, which receives numerous technical upgrades as the game progresses. Alwen is proficient in magic and is able to harness powerful elemental spells. The game starts with Ragna delivering cargo to the floating continent of Irrbard, when he is shot down from his airplane. Alwen, a vampire princess bonds with him to save his life and Ragna promises to reclaim Alwen's stolen castle to repay her.
Source: Wikipedia, "Zwei II", available under the CC-BY-SA License.