兄が妹で妹が兄で。
He’s My Sister, She’s My Brother
Youta and Hikaru are close-knit twins, enjoying a typical sibling bond—until a shocking revelation shatters their world: they aren't biologically related. In the wake of this discovery, Hikaru kisses Youta and runs away, leaving him stunned. As Youta chases after her, a sudden traffic accident throws their lives into chaos, setting off a whirlwind of unexpected twists and tangled emotions. (Unreviewed summary by Grok 2)
Volumes
| Cover | Vocabulary List | Total | Unique | Used Once | New ⓘ | Density ⓘ | |
|---|---|---|---|---|---|---|---|
| Series | 3,333 | 1,182 | 703 | 59% | 10.27 | ||
 |
兄が妹で妹が兄で。（１） | 1,800 | 752 | 459 | 61% | 752 | 10.84 |
 |
兄が妹で妹が兄で。（２） | 1,533 | 744 | 492 | 66% | 430 | 9.70 |