That the last election was stolen from him, and he's back to fight for a job he believes is rightfully his.
"You have to entrust the country to someone who's not a thief, to someone who is not corrupt, to someone with proven skills, someone with leadership, someone who is a patriot."
Fayulu came second to Felix Tshisekedi in 2018.
But he claims he actually won with over 62% of the vote - and unsuccessfully challenged the result in court.
The perceived injustice has fueled the former oil executive's campaign.
That's after a first Tshisekedi term Fayulu describes as five years of corruption, incompetence and insecurity.
"He has done nothing, absolutely nothing. Mr Tshisekedi said he was going to reduce poverty. The Congolese are poorer than before. Is there a single Congolese who can tell me they live better today than they did in 2018? There is only one."
Tshisekedi has urged voters to give him another mandate so he can "consolidate" his achievements.
He has cited the introduction of free basic education and said he plans to soon introduce universal healthcare.
Fayulu, of the Engagement for Citizenship and Development party, has promised to end corruption, create a stronger army to fight insurgents in Congo's east and improve basic services.
He's one of the few front-runners aiming to unseat Tshisekedi.
But it's not yet clear if he has the same support as in 2018 when he was nominated as the umbrella opposition candidate.
Back then his message of anti-corruption and stability after decades of turmoil rang true with the thousands of people who attended his rallies.
This time opposition parties have, as yet, been unable get behind a single candidate and many favour another presidential aspirant - former mining magnate Moise Katumbi.
