Everything you need to understand or teach Flashlight by Susan Choi.
Susan Choi’s Flashlight follows a family whose private memories are braided with the public histories of Japan, the United States, and Korea. A child named Louisa grows up in the shadow of a night on a dark beach when her father vanishes and the only clear relic is a fallen flashlight. The novel rotates through close third person chapters that center on Louisa, her American mother Anne, and a Zainichi Korean boy named Seok whose life is shaped by borders and secrecy. Across decades the story asks how names, letters, and stories can both conceal and reveal the past. Themes include identity and belonging, state power and disappearance, and the ethics of remembering.