Synopsis
Your sister was sucked into your smartphone and turned into an app!?
To restore your app-ified sister back to normal, you must find a girlfriend!!
The girlfriend candidate you finally discovered is… a princess from another planet!?
What will happen to the brother and sister? An application romantic comedy with a twist!!
![Sister Application! [3 on 10]](https://games.hnt.co.jp/wp-content/uploads/2026/03/10201023622.jpg)
![Sister Application! [3 on 10]](https://games.hnt.co.jp/wp-content/uploads/2026/03/1_10201023622.jpg)
![Sister Application! [3 on 10]](https://games.hnt.co.jp/wp-content/uploads/2026/03/2_10201023622.jpg)
![Sister Application! [3 on 10]](https://games.hnt.co.jp/wp-content/uploads/2026/03/3_10201023622.jpg)
![Sister Application! [3 on 10]](https://games.hnt.co.jp/wp-content/uploads/2026/03/10201023622.png)
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