[FairyKing]

Figured out some story about Ichibu Sentai Hayaiger:

"I wish it had been different."
The Majikan are beings who never should have existed, hailing from an alternate timeline sustained by the regretful thoughts of humans. To secure a steady stream of regret and expand their domain, they use twisted technology to cross over into our timeline, and seek out people at pivotal moments in their lives. Able to distort time around them, they move so fast most victims never even see the Majikan ruining their moment to fill them with regret.

Standing against them are six people who actually glimpsed the Majikan interfering, recruited by a mysterious scientist who's more closely connected to the alternate timeline than he admits (he found them by looking for anyone who claimed to have seen a fast-moving demon right before something went wrong). Having been exposed to the time distortions caused by Majikan activity, the five are able to sense other distortions, and with the scientist's technology they can transform and fight the Majikan at their own speed as the Ichibu Sentai Hayaiger!

"Awake at dawn! Hayai Red!"
"Sweet morning dew! Hayai Green!"
"High noon showdown! Hayai Yellow!"
"Dance into evening! Hayai Pink!"
"Dusk brings quiet! Hayai Blue!"
"Shining all night long! Hayai Silver!"
"We only need one minute! Ichibu Sentai Hayaiger!"

As a sixth ranger, Silver would be present in civilian form since the beginning and make his debut as a ranger fairly early, but not reliably fight alongside the others because of his messed-up sleep cycle (later revealed to be caused by his regret): during the day he may be late, get tired quickly or even nap right through a battle, but at night he can take on most Majikan by himself!

They'd also be sometimes fought and sometimes aided by Daitai Red (Alternative Red), a version of Haiyai Red from the Majikan's timeline who sees both the Majikan and the Haiyaigers (or more specifically the scientist backing them) as his enemy. His roll call is "A strange new dawn! Daitai Red!" and there'd probably be a special where he leads his own team of Daitaigers. Eventually he merges with the main timeline Red which grants him his super mode, "Awaken the new dawn! Haiyai Red Lightspeed!"

I'm still not sure what their mecha, equipment or collectables would be like. Probably something to do with clocks?