Lets Lagoon

Yamada is stranded on an island with no passing ships and little memory of how he got there. After finding his sports bag, he assumes he arrived on a school trip and, with only seven days’ worth of food, starts building a boat to escape. He believes he is alone until he finds Imaise Chika eating his food. The two continue working on the boat, but it has room for only one person, so Yamada sets off to seek help. When he notices Chika has put her mostly untouched rations in his bag, he returns. Seeing that she has fashioned an oar from a fishing lance, he decides they can stay on the island longer.