I'm Being Spoiled By My Cousin Big Sister?
Masato Ooizumi just entered high school and he finds himself staying with a relative. Living there is his "cousin big sister" who's being way too close with him!? ___ **Additional Links:** - [Official X](https://x.com/itoko_ane0517)
42 chapters
- Chapter 42
- Chapter 41
- Chapter 40 — Ako-nee and Christmas Eve ②
- Chapter 39 — Ako-nee and Christmas Eve, Part 1
- Chapter 36 — Should I rely on my older cousin?
- Chapter 35 — The Sex Spring Operation
- Chapter 34 — Bath Time with Big Sister
- Chapter 31 — Halloween at the Obana Household ♥︎
- Chapter 30 — Saya-nee and the Cultural Festival ♥︎ (2)
- Chapter 29 — Saya-nee and the Cultural Festival ♥︎ (1)
- Chapter 28 — Ako-nee and the Cultural Festival ♥︎ (2)
- Chapter 27 — Ako-nee and the Cultural Festival ♥︎ (1)
- Chapter 26 — Ako-nee's Request ♥︎
- Chapter 25.3 — Illustration Gallery + Extra Pages
- Chapter 25.2 — Saya-neechan's taking a nap ♥︎
- Chapter 25.1 — Aunt Shiho is defensless too ♥︎
- Chapter 25 — Lately, Ako-nee has been acting a little ••• ♥︎
- Chapter 24 — Taking Care of my Onee-chan ♥︎ (Part 2)
- Chapter 23 — Taking Care of my Onee-chan ♥︎ (Part 1)
- Chapter 22 — On my Way Home with the Class President ♥︎
- Chapter 21 — Doing Hypnosis on my Onee-chan ♥︎
- Chapter 20 — The Dual Nature of Ako-nee ♥︎
- Chapter 19 — A Date with my Onee-chan and A Parfait ♥︎
- Chapter 18 — I'll Clean your Ears ♥︎
- Chapter 17.2 — 3 Special Illustrations + Extra Pages
- Chapter 17.1 — See-through ••• ♥︎
- Chapter 17 — Peeking at Onee-chan ♥︎
- Chapter 16 — Class President in Trouble ♥︎
- Chapter 15 — Playing a board game with Onee-chan♥
- Chapter 13 — I got drunk ♡
- Chapter 12 — You really looked cool♥
- Chapter 11 — Let’s go Swimming♥
- Chapter 10 — Health class with Onee-chan♥
- Chapter 9.5 — Skimpy Swimsuit ❤︎
- Chapter 9 — Let's Cool off Together 🖤
- Chapter 8 — A Watch Party With the 3 of Us 🖤
- Chapter 7 — My Other Big Sister Cousin 🖤
- Chapter 6 — A Reward for You ❤
- Chapter 5 — Sending Love and Support ❤️
- Chapter 4 — Let Me Play With You ❤︎
- Chapter 3
- Chapter 2