When Itsuki and Chitose visit Amane's apartment for a Christmas party only to discover that the angel Mahiru lives next door, they instantly become very curious about the relationship. Chitose, obsessed with cuteness, insists on becoming friends with Mahiru. The day after Christmas, Amane notices that Mahiru has a fever. Despite Mahiru's stubbornness, Amane convinces her to stay and rest in his room. When Mahiru sees Amane so diligently taking care of her as if returning the favor she did for him that one memorable day, it seems to put her at ease.
Honestly, I've been so grateful 
these two months. Thank you.
بصراحة، كنتُ مُمتنّاً جدّاً في هذين
الشّهرين. شكراً لكِ
Ich kann dir gar nicht sagen,
wie dankbar ich für diese zwei Monate bin.
Estoy muy agradecido por estos últimos
dos meses, en serio. Gracias.
Estoy muy agradecido por estos últimos
dos meses, en serio. Gracias.
Je suis vraiment reconnaissant
pour ces deux mois.
Ad ogni modo, questi due mesi
 sono stati fantastici. Grazie di cuore.
Sinceramente, eu tenho muito a agradecer
por esses dois meses. Obrigado.
Ты уже столько для меня сделала,
что не перечесть. Спасибо.