Keiyaku Shimai
ケイヤクシマイ · Contract Sisters · Perjanjian Saudari
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Updated February 2026
Keiyaku Shimai is an ongoing Comedy, Girls' Love, Romance manga (2022). Read all 40 chapters online free on XOmanga.
Kasane Hayafuji's secret joy in life is seeing Aoyama-san, a waitress at a family restaurant. One night, she saw Aoyama standing alone in the rain. When she tried to help, Aoyama suddenly made her an offer. "Will you be my big sister?"
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Chapters
- Chapter 1goon squad
- Chapter 2knight heron
- Chapter 3knight heron
- Chapter 4 — Chapter 4Scyllazy
- Chapter 5knight heron
- Chapter 5.5 — Volume 1 extrasknight heron
- Chapter 5.6knight heron
- Chapter 6knight heron
- Chapter 7knight heron
- Chapter 8knight heron
- Chapter 9knight heron
- Chapter 10 — An older sister who goes to her young sister's cultural festivalknight heron
- Chapter 11 — An older sister who puts her little sister firstknight heron
- Chapter 11.5 — Volume 2 extrasknight heron
- Chapter 12 — Kasane and Mimeiknight heron
- Chapter 13 — Sisters who have different relationships with the people around themknight heron
- Chapter 14 — An older sister who hurries home for her younger sister's sakeknight heron
- Chapter 14.2 — An older sister who hurries home for her younger sister's sakeknight heron
- Chapter 15 — Sisters who celebrate a birthday togetherknight heron
- Chapter 16 — A younger sister who loves her older sisterknight heron
- Chapter 17 — An older sister who isn't sure what to doknight heron
- Chapter 18 — Kasane and Mimei 2knight heron
- Chapter 19 — What an older sister does to make her little sister happyknight heron
- Chapter 20 — Sisters who face hard times togetherknight heron
- Chapter 21 — Sisters won't ask for something in returnknight heron
- Chapter 22 — Sisters should never be left alone.Ayaka Dynamics
- Chapter 23.1Ayaka Dynamics
- Chapter 23.2Ayaka Dynamics
- Chapter 24.1Ayaka Dynamics
- Chapter 24.2Ayaka Dynamics
- Chapter 25 — Don’t flirt with anyone other than Onee-chan.Ayaka Dynamics
- Chapter 26.1Ayaka Dynamics
- Chapter 26.2Ayaka Dynamics
- Chapter 27 — The responsibility of an older sister.Ayaka Dynamics
- Chapter 28.1 — A sister´s determinationAyaka Dynamics
- Chapter 28.2Ayaka Dynamics
- Chapter 29Ayaka Dynamics
- Chapter 30 — Retracting the sister contract
- Chapter 31 — The older sister must plead her case with all her might
- Chapter 32 — The older sister must not treat the younger sister like a child
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About Keiyaku Shimai
- Where can I read Keiyaku Shimai?
- You can read all 40 chapters of Keiyaku Shimai online free on XOmanga.
- Is Keiyaku Shimai finished?
- Keiyaku Shimai is currently ongoing.
- How many chapters does Keiyaku Shimai have?
- Keiyaku Shimai has 40 chapters available to read on XOmanga.
- When was Keiyaku Shimai last updated?
- Keiyaku Shimai was last updated in February 2026.