Aoki (33-6-0) won the 155-lbs lightweight belt after a decimating two-round victory over Kotetsu Boku in April's Kings & Champions event.
The Japanese submission specialist was expected to field a title defence but rumors over the past few months seemed to indicate that the 30-year-old was instead more keen to make his debut on the featherweight front.
It is believed that One FC had offered lightweight bouts to the former Dream lightweight champion but the organisation eventually had to adhere to Aoki's wishes and have therefore paired him up with Tiger Muay Thai's Cody Stevens for the upcoming Total Domination event on October 18.
At an open media workout event on Wednesday, Aoki was in good spirits and was clear about his intent to loft two belts at the same time, a feat coveted by many fighters but achieved thus far only by a handful in MMA history.
When asked if the constant switching between featherweight and lightweight divisions could prove to be a hindrance, the 30-year-old confidently replied, "It'll be no problem. I have had no problems with my diet or training so far."
"I really want to have both the featherweight and the lightweight titles with One FC. I know many fighters in Japan who have done it before and I think I'm ready now."
But he also confessed that he's in no rush to secure a potential featherweight title bout in the near future. Currently, it's a well-known fact that Evolve have two promising fighters in Bruno Pucci and Mitch Chileson who have both secured victories at the featherweight class.
"I want the featherweight belt but I won't fight my team-mates and if they get a shot first then I'm happy to wait," Aoki continued.
"I decided to move to Singapore permanently last month because I like the training programme at Evolve.
"Evolve have a great setup, the training is good. Everyday, I can concentrate on my MMA training here.
"In Japan, I had my family and lots of friends but here I'm pretty much on my own and I can be a lot more focused on my training."
Aoki was also surprised to hear that Boku, his previous opponent, is similarly considering the idea of cutting down by ten pounds in order to compete in the featherweight decision.
It was a proposition that had interested the 36-year-old Krazy Bee fighter prior to his main event fight against Vuyisile Colossa at Champions & Warriors last month although it remains to be seen if the Korean-Japanese boxer will get a call back from One FC after losing out to the South African on that occasion.
"Boku is a good fighter and he's done well at lightweight in his career. If he wants to fight at featherweight then I'm sure he'll do well," Aoki commented.
Total Domination will take place at the Singapore Indoor Stadium next Friday and will be headlined by a bantamweight unification bout between interim champion Bibiano Fernandes and incumbent champion Soo-Chul Kim.
Stevens has a record of 11-5-1 and has yet to be submitted in his professional MMA career but he'll face the test of his life against the current One FC lightweight champion.