https://www.dlsite.com/maniax/work/=/product_id/RJ01309931.html
https://www.dmm.co.jp/dc/doujin/-/detail/=/cid=d_494834/

春から一人暮らしをすることになったJKレナ。「自立のため」と両親には話すが…本心は「誰にも邪魔されず思う存分ちんぽシコリまくりたいから！」でした！
抑圧されたオナニー生活を送っていた思春期ちんぽがついに自由を手にしたら？そりゃもう寝ても覚めてもオナニー三昧！
突っ込みたくて仕方なかったオナホまんこでちんぽズリコキ盛大射精！アダルトVRで憧れの女優にたっぷり「分からせ」られマゾ開花、さらには弟にまで魔の手が…！
普段は清楚なお嬢様JKがちんぽお射精しまくりぶっこ抜きまくり！毎日全力お下品オナニーだ！！

Base +25, nuts987 +13

[Synopsis]

High school student Rena will be living alone from spring.
She tells her parents that she is doing it to become independent but her true feelings are that she wants to be able to jerk off to her heart's content without being disturbed by anyone!
What happens when an adolescent penis that has been living a repressed life of masturbation finally gets some freedom?
She will masturbate all day, awake or asleep!
She can't help wanting to stick it in and jerks off with her penis, resulting in a huge ejaculation!
In an adult VR, her favorite actress fully ''understands'' her and her masochistic side blossoms and even her younger brother is caught up in the clutches of evil...!
A normally neat and tidy female high school student jerks off and cums like crazy!
She masturbates every day with all her might, in a vulgar way!

Base +25, nuts987 +13

看懵逼了，另一位是男主还是女主，レナの弟不是她弟嘛，怎么是上女

Base +6