It is a historical war game following several different conflicts across the world.
The character switch follows a sidequest to give the The Hero a powerfull weapon or clue (without making too easy for the player).
Inverted: The game enforces hotseat multiplayer, causing the players to change as the character stays the same.
Subverted: The game switches to another character, but it turns out that it's the same character you've been playing as, disguised as someone else.
Double Subverted: The game switches to another character, but it turns out that it's the same character you've been playing as, disguised as someone else. Then you eventually end playing as who you were disguised as for real.
Parodied: Each time you level up, Steve turns into a different character.
Zig Zagged: You start playing Alice the fire mage but as she progresses through the level she earns more and more ice and water magic, when she has balanced fire and ice/water powers you switch to Bob, who fights with ice/water powers and earns some of the fire attacks Alice had and some earth attacks, when that's over you play as Carol that starts with the same earth powers Bob had developed and earns air, water and ice powers. Next you play Dave that starts with the same air powers Carol developed and develops all the powers the previous characters have developed depending on which order you solve the dungeons. When that's done you play Carol again and develop fire powers to add to her previous powers. Then you play Alice and develop earth and air powers. Then you play Bob and develop air powers. Depending on your gameplay at the end the four character have a different balance of elemental control and you can use the one you prefer to finish the last mission with the best combination of elemental power you prefer or get them to a bonus stage to improve Alice's fire skills, Bob's water/ice skills, Carol's earth's skills and Dave's air's skills, but this requires the player finding the bonus game hidden in the past levels that can be revisited.
Averted: The game never switches the viewpoint character.
Enforced: "We need a way to show the story from different perspectives... how about we let the characters switch from time to time?"
Lampshaded: Bob: "Do you think, Alice, that it's a bit weird how our squad leader gets replaced every time we complete an objective?"
Invoked: The last game was criticized for only having Chance playable.
Conversed: "Ah damn! I just got this far with Lanna, and now the game switches back to Claudia!
At the beginning of each chapter, you have to switch to a new character because the game takes place over several decades and the previous character you played was caught and killed by The Empire in a suicide attack to complete a piece of the puzzle that will defeat them.
Chance gets captured by Evulz, and so we play as Ichigo attempting to rescue him. But, like the player, Chance's old comrades keep comparing her to Chance and finding her lacking, soon growing to despise her. Ichigo has a massive crisis of confidence and fails to achieve anything, leading to a mental breakdown, taking the damper off her powers and leading to her unintentionally casting an Apocalypse Spell, which was Evulz's ultimate aim and the real reason he captured Chance. Chance then breaks out and you use him to kill Ichigo before she can end the world, having to kill the character you previously despised in a deliberately painful way that makes you realise how much you'd bonded to her.
Reconstructed: Your gameplay switches between many characters being dispatched by The Empire one by one; however, they frequently remind everyone around them and the player that their battle will not be for naught, fighting harder and more valiantly with every passing year. At the ending, your rebellion stands triumphant due to the sacrifices of true heroes who will be remembered for all of history.
Played For Laughs: Bob is playing Chronicles of Troperia and enjoying tearing things up as Chance. He keeps trying to call Alice over, but she isn't paying any attention... until the game kicks him into Ichigo's shoes, and his shouts of surprise draw her over. Meaning that naturally, her first impression of the game he's been raving about involves a little cutesy girl in a pretty red-and-pink dress with lots of frills.
Played For Drama: Chance has been doing well on his quest to stop Emperor Evulz' forces so far, but runs into trouble when he discovers a burning village. While trying to defend the survivors, he's surrounded, seriously wounded, and falls unconcious... and the game switches focus to Ichigo waking up in her sweetly decorated room.