Koi*Oto

Mimori Ichigo spends her summer break before high school at her grandmother's house near the ocean, helping out at the family shop. One evening while walking her grandmother's dog, she meets a boy named Kouki. They meet again, this time alongside his cousin Taiga. For reasons unknown, Kouki has no memory of their first encounter, and Taiga begs Ichigo not to tell him. Later, Ichigo and Kouki sneak out to watch fireworks, but they separate dramatically.

When Ichigo starts high school, she is shocked to find that both Kouki and Taiga attend the same school. Even more puzzling, neither of them seems to remember her. Ichigo is left wondering if they are genuinely forgetting or simply pretending, and if so, why they would lie.