Boku to Sannin no Onee-sama ~Oneesan-tachi to Haramase OK Yome Erabi Dousei Life! by Overdose jap

The main character, Kagurazaki Asahi (Akira Kaguragi), which is the trace of the world-class enterprise "Kagura Tree Group" holding huge assets.
Following the family's family trip, I leave my parents for a social study and live a very common life.
The caretaker of such a hero is a mother's sister whose a hero passed away at a young age, her aunt Akane Azakizaki (Kenzaki Akane).
A hero who is living a normal life with my aunt who is taking care of him from a young age can tell stories of contents that change such life from a certain day from Akane.
Father, Kagura Takahiko, who is the top company in everything, suffered from a serious illness and had to decide the successor as soon as possible.
In appointing the hero as a successor, it is the presence of the next successor, that is, the main character of the kid who is strongly demanded from executives who place importance on conscientious management.
In order to clear the request, things that you want the hero to "choose your daughter".