Locals Tuva Youth and First Light Taveuni and both international teams - Hong Kong and Wesley Fijian - shone on the opening day of the Uprising Youth 7s in Sigatoka.
The defending champions beat Togabula 34-0, Ratu Filise 26-0 and Lomavata Kangaroos 28-5 in a dominant display in Pool A.
Tuva Youth will play Malolo in tomorrow's quarter final.
First Light Taveuni edged Cuvu Blues 12-7 and Ratu Kadavulevu School 17-14 although had an easier 27-7 win over Nasaunivalu and play Hong Kong in the quarters.
Hong Kong, one of three teams the Union has brought to Fiji, beat Ra Barbarians 31-7, Nailaga 31-7 and Northern Spirit 26-14. Kowloon's Sam Tsoi scored four tries on the opening day.
However the top try scorer on day one of the four-day rugby sevens festival was KISSP Wesley Fijian's Selesitino Ravutaumada who bagged six in three matches.
The invitational selection from Paerata (near Auckland) were untroubled against Malolo 19-0, SRS Henibua 27-5 and Cuvu Marine 33-0 and will play Rugby Academy (Fiji) in the last eight.
Wesley coach David Qaranivula said:
"We have made a good start to the tournament but there is still a lot to work on. The boys are excited to be back in Fiji playing in the home of their birth and they have worked very hard preparing for this tournament.
“The atmosphere at Lawaqa Park makes us all proud to be here and for our families back home.”
The winners of the Uprising Youth 7s wins $10,000.
Thursday also sees the return of the Crest Na Iri Trophy with nine women's teams including three from overseas.
Japan return after an outstanding first appearance last year, where they made the final, while Hong Kong join their youth and men's teams for the first time.
Stars USA, an invitation team with players from around the world, also take on the locals from 10:40 am. Telecom Fijiana Makosol is the reigning champion.
As is tradition at the Mana Whey Fiji Coral Coast Sevens, a special guest from the world of elite rugby is invited each year to be honoured with a plaque laid in the Sigatoka Rugby Walk of Fame.
This year’s recipient is former New Zealand Sevens captain DJ Forbes who joins previous inductees including Waisale Serevi, Jonah Lomu and George Gregan.
The Mana Whey Fiji Coral Coast Sevens is sponsored by MANA Whey Protein (Tabua sponsor), Tourism Fiji, Sigatoka River Safari (strategic partners), Crest, McDonald's, Outrigger Fiji Beach Resort, Uprising Fiji Beach Resort (prime partners), Bedarra Beach Inn, Gecko's Resort, Shangri-la's Fijian Resort & Spa (official hotels), CFL, Fiji Times, Fiji TV (media partners), Airports Fiji Ltd, Aqua Pacific, BLK, Bula Car Rentals, Du Aull Services, GO Advertising, Hot Glass Fiji, Mana Graphix, Pacific Destinations, Quality Print, Slater Media, Sports Now, Sun Insurance, Tappoo and Vodafone (official suppliers).
QUARTER FINALS FOR THE UPRISING YOUTH 7s, Lawaqa Park
Tuva Youth v Malolo
First Light Taveuni v Hong Kong
Rugby Academy (Fiji) v KISSP Investment Wesley Fijians
Rugby Academy (Fiji) 2 v Kings Selects
RKS v Ratu Filise
Northern Spirit v Ravuka Sharks
Davatelevu v Nailaga
Togobula v Cuvu Blues
POOLS FOR THE CREST NA IRI TROPHY
Pool K: Fijiana Makosoi, Stars USA, Blue Light Sisters
Pool L: Japan SDS, Nadi Blazers, Hotspring Savusavu
Pool M: Hong Kong, SNAX Nadi Aviators, Striders
For more information: fijicoralcoastsevens.com