To be more specific, top4 teams are:
Deguchi(Ciel), Mirumirumiruki(Miyako)
Rei(Hisui&Kohaku), Taa(Len)
Kanna(Miyako), Niiya(Ciel)
Kubo(Sion), Kou(V. Akiha)
Apparently there were 2 Last chance qualifiers, and Oyashiro/Udonge and SAT/Niku team won those.
Kaimaato/Leo team got to top8 and lost to Deguchi's team(wtf?), Denpa/Yuu loses 1st round to Rei/Taa(another wtf), Hato team loses to Jin/KNeko team in the 2nd round, SII/Garu gets to top8 and loses to Kanna's team, Nakau's team lost to kubo's team 2nd round. The Chinese MB team(DHH, ◆王) had to play against Zea/Hagi team first round, and the Korean MB team(Dadami, A-ryu) had to play against SII's team first. They both lost. That's all the highlights I can think of now
Lots and lots of upsets. Also, kubo is using Sion, so the Tougeki page all the way until now had the typo and they didn't bother to fix it