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100% Compatibility: My DNA Desires My Step-Brother
相性100%の妹～遺伝子がお兄ちゃんを欲しがってる～
Yuri is a young man whose life takes an unexpected turn when the government assigns him a marriage partner: his own younger stepsister, Hasumi. According to the system, they are a perfectly matched pair, fated to be together. Despite the awkwardness of their new relationship, they must navigate this forced union under the same roof.
As they begin living as a couple, Yuri and Hasumi discover that the government's claims about their compatibility might be more than just bureaucratic assurance. Their physical chemistry is undeniable, and they find themselves drawn to each other in ways that challenge their understanding of family and fate. The line between sibling affection and romantic desire begins to blur, leading them down a path of forbidden passion.
