Parents need to know that The Last Fallen Moon: Gifted Clans, Book 2 is the sequel to The Last Fallen Star, Graci Kim's first middle grade novel. In this series, non-magical Riley Oh and her magical sister Hattie face mythological creatures, goddesses, and dangers, including rulers of each of the seven layers of hell, hellbeasts, dokkaebi (goblins), gwisin (hungry ghosts), and a salmosa (tiger serpent). The magical world is based in Korean mythology and folklore, and many words, creatures, entities, goddesses, and divine items come from these tales. Most of the story takes place in the afterlife, and Riley early on takes a potion to stop her heart (briefly killing herself) so she can enter the afterlife. Each layer of hell is described in violent detail ("falling from great heights, being crushed by boulders, cooked in boiling oil, devoured by hellbeasts, cut by jagged knives, frozen in ice until your body shatters, and drowning in sand"). But when Riley gets there, she finds hell is no longer structured around punishment and torture and instead around rest, relaxation, and fun. There's some light violent action (Riley gets cut on her arm), some scary scenes (dungeon walls painted with blood, friends start getting "erased"), and some moments of peril. Some friends try to make a love potion but it doesn't work. Mild language includes: "ass," "butt," "sucks," "hell," and "amazeballs."