Monkeys!!
モンキーズ
(Adapted, JLPT3)
+18
1
High school
1
Medium playtime
1
Ojousama
1
Random humor
1
Voiced protagonist
1
Yankee
1
GSR
The game occurs both in an all-male delinquent school and an all-female aristocrat school. So you are in contact and can compare ojousama scheech and yankee speech. Also, be aware, there is some scenes for random humor. They are small and don't impact the overall understanding of the story.