You weren't My Sister, but My Fiancée?!

"Humanity, adore thy little sister—." "I wonder when my sister Kana started becoming distant from me—." Shina Takashi lamented his current days, where being ignored was not uncommon. One day, his parents dropped a shocking revelation. Not only was Takashi not their biological son... but he was also the fiancé of Kana, whom he thought was his sister! From siblings to potential romantic interests, it’s not easy to sort out feelings. The fluctuating emotions, the bewildering distance. Their relationship undergoes an inevitable change—! She's a sister but not a sister!

35 chapters

• Chapter 30.1
• Chapter 30
• Chapter 29
• Chapter 28
• Chapter 27
• Chapter 26
• Chapter 25
• Chapter 24.5 — Volume 4 Extras
• Chapter 24
• Chapter 23
• Chapter 22
• Chapter 21
• Chapter 20
• Chapter 19
• Chapter 18
• Chapter 17
• Chapter 16
• Chapter 15
• Chapter 14
• Chapter 13
• Chapter 12.5 — Extra
• Chapter 12
• Chapter 11
• Chapter 10
• Chapter 9
• Chapter 8
• Chapter 7.2 — Special Chapter
• Chapter 7.1 — Extras
• Chapter 7
• Chapter 6
• Chapter 5
• Chapter 4
• Chapter 3
• Chapter 2
• Chapter 1