| App Type | game |
| Release Date | Dec 31, 2025 |
| Details Last Modified | January 1, 2026 (9 months ago) |
| Developer | 海伦幻想制作组 |
| Publisher | 海伦幻想制作组 |
| Genres | Casual, RPG |
| Supported Systems |
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| Price | $1.99 |
| Required Age | 0+ |
| Support | 1738762187@qq.com |
《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！
Custom Volume Controls
Family SharingKeyboard Only OptionMouse Only OptionPlayable without Timed InputSave Anytime