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《某天成为妹妹》是一款短篇galgame。在期中考后，林煦接受了夏璃的告白，二人成为了情侣。但双方父母却因家长会相识相认相恋，两个单亲家庭阴差阳错成为了一家人——校园情侣竟成兄妹？！甜蜜轻快的恋爱日常，奇妙的身份重叠，由此展开！
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Voting closes Mar 1, 2026
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