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I Kissed my Girlfriend's Little Sister?!

I Kissed my Girlfriend's Little Sister?!

カノジョの妹とキスをした。

After a month of dating, the protagonist finally holds hands with his first girlfriend, Haruka. That same day, his life is upended when his father remarries and he gains a new stepsister, Shigure. To his shock, Shigure is the spitting image of Haruka because she is, in fact, Haruka's long-lost twin sister, separated from her due to family circumstances.

Now living under the same roof, Shigure's presence introduces a complex and twisted dynamic into his budding relationship with Haruka. He finds himself entangled in a confusing situation, unable to confess the unsettling developments to his girlfriend as the lines between family and romance dangerously blur.

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