Shima and Mai Sakura, the eldest and youngest siblings of the Sakura family, are high school students who appear to be normal on the outside. Both of them seem to take care and love each other as normal siblings would.
In reality, both of these sisters are in an incestuous lesbian relationship, with Shima bearing a rather strange sister complex towards her younger sister Mai!
Her Elder Sister Has A Crush On Her, But She Doesn't Mind (Siscon Oneechan to Kinishinai Imouto) was written and illustrated by Kineso Kiribai, which was serialized by Comic Cune. The manga ran from July 28, 2018, to October 27, 2020, with 3 Volumes and 26 Chapters in total. Originally, it was released as a web manga from the author's Twitter account since April 5, 2018.
This manga provides examples of:
- Blatant Lies: Has this moment when Shima was caught red-handed holding Mai's panties in Chapter 2. Subverted, however, when Mai simply does not mind her sister's weird fantasies.Mai: Onee-chan... What are you doing with my pantsu?Shima: N-no, I wasn't doing anything weird with them!
- Brother–Sister Incest: The main and principal focus of the manga, as seen with Shima and Mai, who are almost in an incestuous relationship.
- Indirect Kiss: Chapter 3 when Mai sucked on the lemonade straw that Shima had, she later drank it all.
- Oh, Crap!: Chapter 1. When Shima attempts to leave Mai's bedroom, after the latter fell asleep, it was implied that Mai was just simply faking it, as she quickly grabs Shima by the hand and pulls her into a hug. The same chapter then shows Shima and Mai's mother catching the two hugging each other, who was less than pleased.
- Only Sane Woman: Yuu Tsukamoto is this, as she often has to put up with Shima's bizarre sister complex.
- Perverted Sniffing:
- Chapter 1. Shima, at one point, broke into Mai's bedroom and proceeded to sniff her blanket for her scent. Later goes into an Oh, Crap! moment, albeit Played for Laughs, when Mai sees her sister.
- Chapter 2. While doing the laundry, Shima was seen sniffing Mai's panties yet again, causing her to blush profusely when the latter caught her, leading to Shima catching a minor cold.
- Sequential Artist: Chapter 6 reveals that Shima and Mai's mother is a manga artist, as a past hobby. She is all too embarrassed about this, as it was a Yuri Genre manga that she firstly published in the past, which was a Doujinshi.
- Shipper on Deck: Near the end of Chapter 6, Shima and Mai's mother was implied to be drawing a Brother–Sister Incest, yuri doujin manga based on her own daughters.
- Yuri Fan: In one of the extra chapters, Chapter 15.3, it is revealed that Shima's mother is actually this, when she sees Yuri Genre mangas. It does not come as a surprise as she was a mangaka in the past.
