Group 4 of the 71st Inter High School Mahjong Championships includes the second seeded Rinkai Girls' High School and the 12 schools that drew the 40–51 spots in the tournament.
First tournament round -- day 4[]
Winners of each first round match meet Rinkai, which has a bye in the first round.
Match 4A[]
Draw
|
Team
|
Points
|
42
|
Yamasu High School
|
Unknown
|
40
|
Choujano High School
|
Unknown
|
41
|
Tsugu High School
|
Unknown
|
43
|
Mangokuura High School
|
Unknown
|
Match 4B[]
Draw
|
Team
|
Points
|
45
|
East Hakuraku High School
|
Unknown
|
44
|
Koshinoo High School
|
Unknown
|
46
|
Wabuka High School
|
Unknown
|
47
|
Tendou University Affiliated High School
|
Unknown
|
Match 4C[]
Draw
|
Team
|
Points
|
49
|
Usuzan High School
|
Unknown
|
48
|
Kotonami High School
|
Unknown
|
50
|
Ukisato High School
|
Unknown
|
51
|
Suzurishima High School
|
Unknown
|
Second tournament round -- day 6[]
Two winners of the second round match of Group 4 meet the two winners of Group 3 in one of two semi-final matches.