NeoArkadiaThe cover features the main cast of SEVENS, along with the game original protaganist.
Atachi Mimi
Menzaburo Oomori
Maki Sushiko
Atachi Yoshio
Rinnosuke
Are all confirmed to be in the game
Otes is included
Mutsuba Asana is also included and on the box art!
Source
Source: V Jump