Date A Live: Tohka Dead End

April 10th marks the beginning of the school term after the end of spring break. Shidou is woken by his younger sister and expects an ordinary day. Unexpectedly, a mysterious girl claiming to be a spirit appears after a massive explosion erases part of the town. The girl, identified as a threat to humanity, is met with two possible responses: eliminating her or engaging in dialogue. Shidou's sister, Kotori, suggests an unconventional approach—dating the spirit to change her intentions. Shidou is shocked by the suggestion.