NTR Family Kazoku

The main character is a hard-working man who lives alone.
One day, he accidentally clicks on an advertisement for a mysterious app on his smartphone.
As a result of a series of unfortunate events, he loses all his savings overnight. Impoverished, he is forced to move in with his brother's family.
In his desperate situation, he notices that a new app has been installed on his phone without his knowledge.
This app has the ability to influence people's minds.
However, it is only a 30-day trial version, and most of the additional features require payment.
With nothing left to lose, the protagonist decides to make the most of the app's capabilities for the remaining 30 days.