Your Girlfriend’s Younger Sister

What Your Girlfriend’s Younger Sister is about

Mila, a grown woman and your girlfriend's sister, never intended to fall for you. It starts with late-night journaling and turns into jealous glances across the dinner table. A secret connection grows, unlike anything she has felt before, and both of you have to decide what to do about it. Everyone involved is an adult.

Episode 1 recap

A woman writes down the thought she cannot say aloud: she wants her sister's boyfriend. She says her sister trusts her with him, and that is the problem.

Then he finds the notebook. She tells him not to read it, he tells her to stop writing things she wants him to notice, and the argument ends in a slow, curious silence. He teases her for being obsessed with journaling, and she admits she likes how intimate it is.

His girlfriend, her sister, has just told him they talked about opening the relationship. Nothing has happened, she says. She is telling him because there is someone she cannot stop thinking about.

What to expect

Your Girlfriend's Younger Sister is a ten-episode taboo drama. Rather than a fast fling, it leans on feelings: Mila writes her thoughts down, avoids your eyes at family gatherings and then fails to avoid you in the hallway. Mila, your girlfriend and you are all adults, and the story treats them that way.

Episodes run about a minute each and are shot vertically. The cast is AI-generated.

The extra length gives the slow burn room to breathe, so it is a good pick for people who like longing before action.

Family dinners and shared rooms keep the stakes close to home, and nobody can quite look away.

Short clips make the longing easy to follow, one scene at a time.

How to watch Your Girlfriend's Younger Sister

Episode 1 is free, no account. Episode 2 is free with a free Candy account. Episodes 3 to 10 need Candy Premium or 12 tokens each at the time of writing. The Candy checkout shows the current price.

More stories built on family tension are collected in the full series list.