Devil Sister!

Devil Sister! is a phone-chat dating sim for players who want a darker, obsessive take on romance stories. The tone leans intense and possessive rather than lighthearted.

Story

Your sister has decided you belong to her, and she has no intention of hearing "no." What starts as a goth sister's fixation on her brother grows into a relentless pursuit, leaving the player to decide how far they'll let her devotion go.

Gameplay

Play unfolds through phone-chat conversations where you respond to your sister's escalating messages and advances. Choices shape how her affection develops, moving between simple chat exchanges and more charged encounters as she pushes past normal boundaries. The loop centers on managing her attention and deciding how much control to give up to her.

Features

• Phone-chat interface built around ongoing conversation with one dominant character
• 3DCG and 2DCG visuals paired with real porn assets
• Femdom-leaning dynamic where the sister drives the pace and intensity

Notes

The uploaded build includes a cheat option that skips in-game wait times.