I Stumbled into a Tomb-Raiding Novel and Became the Group's Lucky Darling

Transmigration / BG / Everyone has a one-sided crush on the protagonist / Lighthearted comedy. Tomb raiding + all pairings + chosen one with absurd luck. An ordinary modern college student transmigrates while camping in the mountains on her graduation trip. Transmigrating into someone else's body leaves her slightly injured from a fall and with a high fever, damaging her memory. She retains her sense of self and general knowledge, but loses her memories of her family and the entire plot of The Grave Robbers' Chronicles.