Amnesia

Synopsis

Ikki and the heroine go on a date to see a movie, and Ikki asks the heroine to come up with a request for him to grant. After thinking, she tells him to escort her to work tomorrow. He tells her that it's an odd request, but he'll grant it. At home, as the heroine starts to go to sleep, still confused, Orion reappears in her room. He reveals that the heroine's experiences were not a dream, and that she might have somehow traveled to another world. Before he's able to explain any further, he vanishes mid-sentence.

At work, her manager's personality is once again different, but Ikki helps the heroine through the day, sparking her memories of him. One of her other coworkers advises the heroine that she shouldn't date Ikki because she heard a rumor that he always dumps girls after three months. She accidentally hits her head by being clumsy, and Ikki takes her to his house.

(Source: Wikipedia)