Identify JRPG with trio of dungeon crawling girls

[Bill Williamson]

you play as a girl who is in school and every day you start back at your house with your brother and parents you can help your brother by jerking him off and the first dungeon is a castle and you get there by a portal in the park.

 

[Niajj]

Pretty sure you're thinking of "Kozue's Strange Journey".

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[Bill Williamson]

i am 10 internet point for you comrade