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Manga / One Week Friends

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"Will you be my friend?"

The two of us became friends again and again.
To create a memory of "a friend".
He swirls around the memory of "a friend".
So that one day they can become "friends".

One Week Friends (Isshuukan Friends) is a yonkoma manga series written by Matcha Hazuki, serialized in Square Enix Gangan Joker from January 21, 2012. It was first published as a one-shot manga in Gangan Joker's September 2011 issue. It has been collected in four tankōbon volumes as of December 2013. An anime television series adaptation by Brains Base aired in April 2014, and can be watched legally on Crunchyroll.

High schooler Yūki Hase notices that his classmate Kaori Fujimiya is always alone, and seemingly has no friends. After approaching her and attempting to become friends, it seems that he is successful until Friday, when Kaori reveals that she loses every memory of her friends each Monday. Despite learning this, Yūki endeavors to become her new friend every week.

One Week Friends contains the following examples:

  • Aloof Dark-Haired Girl: Kaori originally, though her aloofness was just an act to avoid making friends and potentially hurting them every week.
  • Arc Words: "Please be friends with me". It's what Hase says to Kaori every week.
  • Book Dumb: Hase, especially at mathematics. Saki too.
  • Broken Bird: Kaori's condition started at elementary school and lasted for ten years, which has led to her developing a facade to protect herself from the pain of forgetting her friends.
  • The Ditz: Saki's a bit of an airhead.
  • Easy Amnesia:
    • Kaori loses every memory of her friends each Monday.
    • Notably, Kaori doesn't lose memory of those she does not consider to be her friends, which fortunately includes her family.
  • Friendless Background: Kaori's amnesia, which she got in elementary school, causes this.
  • Grew a Spine: The first aesop Shougo taught to Kaori upon their first meeting at the rooftop.
  • Innocently Insensitive: Because she is focusing on forming platonic relationships, Kaori tends to overlook romantic implications her actions can have, causing Hase much frustration.
  • Middle Child Syndrome: Shougo's dislike against women in general is caused by his position as the only son in his family. His elder sister always bosses him around while his younger sibling cries a lot.
  • Mood Whiplash: The transfer student's appearance, relation and response to Kaori's past in chapter 14.
  • Odd Friendship: Yuki and Shougo. They're nothing alike, but the fact that they're on a First-Name Basis with each other hints that they're actually quite close.
  • Shipper on Deck: Both Fujimiya's mom and Saki seem to ship Hase and Fujimiya.
  • Sickeningly Sweet: In-universe example. In episode 3, Shougo claims that Hase and Kaori's friendship is sickeningly sweet to the point where looking at them kills his appetite.
  • The Power of Friendship: Hase's constant efforts to create good memories with Kaori, despite it being supposedly reset at the end of each week, is not entirely fruitless. Kaori begins to retain bits and pieces of her memories even after the reset. Despite that, certain triggers can undo all the effort put in by Hase.
  • The Stoic:
    • Kaori, although her stoicness is mostly a facade.
    • Also, Hase's friend, Shougo.
  • Wham Line:
    • Episode 9 has one.
      'Hajime: [to Kaori] You broke our promise. You traitor.
    • Also chapter 17/episode 10 when Saki says to Kiryuu: "Kiryuu-kun, we can be family!"