All Five of My Sisters Have Systems

Because of an accident, both of Simon's parents died and he was adopted by his aunt who lived far far away and suddenly had five sisters overnight.
The flattered Simon was bound with the "System Supplier" System.
It automatically gave a system to each of his sisters.
The eldest sister, a domineering company president, obtained the Return Rate System.
Invested in fashion project, return rate 120%;
Invested in jewelry project, return rate 300%;
Invested in brother Simon, return rate 1000000000%!
Second Sister Elizabeth, a Psychologist, obtained the Inner Voices Eavesdrop System.
Not only could she hear the inner voices of her patients, but she could also hear the inner voice of her brother. Simon wanted a “full-body essential oil massage-meditation treatment”? Satisfy him~!
Third Sister Mary, a superstar actor, obtained the Acting System.
Acted as a female officer, acting skills +100;
Acted as a female nurse, acting skills +100;
Acted as Simon’s girlfriend, acting skills +10000!
Fourth Sister Katherine, a gorgeous goddess amongst scholars, obtained the Check-in System.
Checked-in to study at Simon’s room received god-tier Biology knowledge!
Checked-in to study at Simon’s table received god-tier Chemistry knowledge!
Checked-in to study on Simon’s bed received god-tier Physiology and Health Science knowledge!
Fifth Sister Lidia, a famous streamer with more than a million followers on Tiktok, obtained the Streaming System.
I only need to stream a regular day in the life of my elder brother Simon and me to receive all kinds of rewards!
As such.
Simon’s life started becoming a lot more lively.