Hanabi is twelve years old and caught between childhood and something else entirely. When she accidentally sees her homeroom teacher locked in a kiss with another woman, the moment lodges itself in her mind, raising questions she didn't know to ask. Around the same time, she begins noticing changes in her body that her friends haven't experienced yet, making her feel oddly isolated even when surrounded by classmates. School corridors become spaces of quiet anxiety. There's a boy she's starting to care about in ways that confuse her, and she wonders if what she's feeling counts as love or if she's just imagining things. Every conversation with friends feels loaded with unspoken meanings. Every glance in a mirror brings self-consciousness. This story captures the specific ache of that in-between age, where the world suddenly seems bigger and more complicated than it was last year. It treats a sixth-grader's worries with genuine weight, never condescending or glossing over the very real intensity of being twelve and watching your life shift beneath your feet.