本片是一部日本爱情片，上映于2007-10-26，由保坂大輔导演，由つぼみ/佐久間麻由/岡部尚主演。
剧情简介：兄妹の禁断の愛に特化した「くりいむレモン」シリーズ第8弾。自分の才能に限界を感じていた漫画家志望のマコは、一緒に暮らすことになった留学生のネネと姉妹以上の仲になる。そんなある日、マコはある男子から告白され…。R-15作品。
Mako, aims to become a comic artist, feels her limitation. Her present work, which is to apply the new face award of a comic magazine, never goes well. When Mako abandons to herself despair, Nene comes to Mako’s house to live together. Mako and Nene starts drawing comic for the award and get along together like sisters from that. However, the comic, which is made in union, is rejected unfortunately. Since Mako doesn’t have love experience, she can’t draw the real romance sequence. Then, Nene says Mako that Let’s practice, and she suddenly kisses Mako. A couple of days later, Yu, a male classmate of Mako, confesses his love to Mako. The closer the relationship between Mako and Yu becomes, the bigger Nene gets jealous from this. Nevertheless, Nene has an unbelievable secret…
外文名：くりいむレモン いけないマコちゃん
别名：Kurimu Remon: Ikenai Mako-chan / Cream Lemon - Mako， Opens the Door / 奶油柠檬 玛可请开门
类型：爱情 / 情色 / 同性
地区：日本
导演：保坂大輔
编剧：保坂大輔
演员：つぼみ / 佐久間麻由 / 岡部尚 / 浅野麻衣子 / 浦井崇 / 宮田亜紀 / 川上貴史
