Alone
Zarius has night shift work for the next week. Meanwhile, Rio spent his nights gambling.
So, Eric was the only one in their humble home at the moment.
Eric once suggested to Rio to recruit a housekeeper to help the three of them take care of the house.
However, Rio immediately refused. Rio prefers it if Eric does the housework rather than having to hire a maid. Instead of using the money to hire a maid, Rio's money is better to use to buy the lottery. That's how the crazy young man thought about his fate.
Somehow his past was there, until Rio would rather wander and gamble than help Zarius with work.
If asked like that, Rio would reply, "It is Master Zarius's duty to work to support his subordinates. My job is only to cook food for you!"
That's what Rio said whenever Zarius and Eric protested, why did Rio just wander, play and gamble.
Then, the innocent Zarius always responded.