Source: https://kakuyomu.jp/works/16817139558950722488
Synopsis
After dating for half a year, my girlfriend suddenly broke up with me.
She said she was no longer sure if she liked me. She has stubborn determination and she didn’t even listen to me when I asked her to give me a chance.
In the midst of my heartbreak after breaking up with her, her sister or rather my ex-girlfriend’s sister, appeared.
When I told my ex-girlfriend’s sister what had happened, she made a proposal to me.
Would you like to go out with me this time?
I intended to make my ex-girlfriend jealous, but we ended up having so much fun together that it didn’t matter anymore……
Chapter 1
Episode 1 – I Broke Up With My Girlfriend. Then I Met My Ex-Girlfriend’s Older Sister
Episode 2 – I’m Dating My Ex-Girlfriend’s Older Sister
Episode 3 – I’m Holding Hands With My Ex-Girlfriend’s Older Sister
Episode 4 – It Seems That My Ex-Girlfriend’s Older Sister Wants to Make My Heart Skip a Beat
Episode 6 – I Have a Feelings That The Sisters Are on a Bad Terms
Episode 8 – My Ex-Girlfriend Seems To Be Wondering What I’m Up To
Episode 9 – I Enjoy Being With You
Episode 10 – Studying For Test
Episode 11 – I Want To Flirt With My Ex-Girlfriend Older Sister, So Please Don’t Disturb Me
Chapter 2
Episode 13 – Request From Ex=Girlfriend
Episode 16 – Flirting At a Family Restaurant
Episode 17 – I Can’t Go Back To My Ex-Girlfriend
Episode 19 – I Kissed My Ex-Girlfriend’s Older Sister
Chapter 3
Episode 23 – Confession From Ex-Girlfriend ①
Episode 24 – Confession From Ex-Girlfriend ②
Episode 25 – Older Sister And Younger Sister