Mayoi Snail, Part One Episode 3

Koyomi Araragi has an argument with his sister and then finds it difficult to stay in the house. He goes to the park where he meets Hitagi Senjyogahara. They see a little girl, Mayoi Hachikuji, comparing the town map displayed in the park to the memo in her hand. Learning that Mayoi has lost her way and route to a relative's home, Koyomi offers to help, only to be violently rebuffed.