The game centers on Canon Foreigner Kururugi -whose gender is chosen by the player- an Ordinary High-School Student who, while helping their father prepare for a festival, is suddenly whisked away to Feudal Japan. Soon after arriving, s/he learns to harness the power of the Shikigami and falls in with Inuyasha's group, whom s/he teams up with in order to find a way home, which seems to lie with Naraku and his new ally, the mysterious Utsugi...
This game contains examples of the following tropes:
- All Webbed Up: The game's first boss is a spider demon, so of course this trope comes into play.
- Audience Surrogate: Kururugi, and a rather awesome example, at that. He/she quickly becomes very useful thanks to the Shikigami powers and is integral in solving some of the major problems that come up (for example, one of his/her powers is essential to taking away enemy barriers so attacks will actually damage them). He/she's the "player character". Not to mention that given that Kururugi can "hook up" with one of the members of the group, he/she's also a "fanboy/fangirl surrogate". Although that last part's kind of spoiled during the ending when Kururugi is sent back to the modern era...unless it's Kagome's ending, since of course Kagome lives in the modern era as well, so they can meet up pretty quickly.
- Big Bad Duumvirate: Utsugi... and Naraku, of course.
- Cardboard Prison: Early on, due to wanted posters put up by Kagura, Kururugi is arrested and thrown in prison. S/he escapes by using his/her Shikigami powers to blow out a wall.
- Combination Attack: All party members can perform team moves in battle.
- Crutch Character: Sesshomaru, during his brief stint as a Guest-Star Party Member, takes the place of the entire standard party and is fully capable of slaughtering his way through anything you encounter without breaking a sweat.
- Guest-Star Party Member: Sesshomaru, who Kururugi briefly travels with one of the times he/she's been split up from the others. Assuming you meet some conditions, he'll also join up with the female Kururugi against the final boss.
- Hero with Bad Publicity: Thanks to Naraku and Utsugi's manipulations, Kururugi is accosted on two separate occasions by first human villagers and then Koga's pack, leading to Inuyasha and co. helping his/her clear her name.
- Hopeless Boss Fight: The party's first battle with Naraku. Thanks to his barrier, he doesn't take any damage at all, and then takes the entire party out in one attack.
- Late in the game, there's a segment where Kururugi has separated him/herself from the rest of the group and attempts to stop a demon that's been menacing some villagers. The first form can be defeat without much trouble, but the boss then reveals its true strength and will automatically finish him/her in one hit. Fortunately, the rest of the gang comes in to save the day, and then the boss fight resumes for real.
- Improbable Use of a Weapon: One of the team attacks in-game is Kagome using Miroku's staff as a makeshift arrow.
- Level-Up at Intimacy 5: Picking romance options for a specific character will help unlock new Co-op techniques.