Yūki Hase
Yūki Hase |
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| Kanji: | 長谷 祐樹 |
| Romaji | Hase Yūki |
| Statistics | |
| Age: | 17 |
| Birthday: | July 14th |
| Height: | 169.7cm |
| Portrayed by: | |
| Japanese: | Yoshitaka Yamaya |
| English: | TBA |
Yūki Hase (長谷 祐樹, Hase Yūki), is the male protagonist of the anime Isshūkan Friends (One Week Friends). He is a kind-hearted and compassionate high school student who notices his classmate, Kaori Fujimiya, always sitting alone. Yūki’s curiosity and concern for her well-being lead him to take an interest in befriending her. However, he soon learns that Kaori loses all her memories of her friends every Monday, a condition that creates a significant barrier in their budding friendship.
Despite the challenges posed by Kaori’s memory loss, Yūki is determined to support her and remain her friend, going out of his way to rebuild their connection each week. His unwavering dedication and empathy are central to the series, highlighting themes of friendship, memory, and emotional resilience.
Background

Appearance in Anime
Yūki Hase’s life as a high school student is relatively typical until he becomes aware of Kaori Fujimiya’s situation. Kaori’s unique condition, where she forgets all her memories of friends every Monday, deeply affects her social life. Most students avoid her because they feel the effort of maintaining a friendship is futile. However, Yūki is moved by Kaori’s situation and, despite not fully understanding her condition at first, he makes it his goal to be her friend.
Yūki’s background is marked by a deep sense of empathy and a strong desire to help others. His willingness to make an effort to connect with Kaori, even when she has no memory of him from week to week, showcases his dedication and emotional intelligence. Throughout the series, Yūki grows as a person, learning not only about Kaori’s condition but also about the complexities of human relationships and the power of persistence and kindness.
Appearance
Yūki Hase has a youthful, friendly appearance typical of a high school student. He has short, light brown hair and warm, expressive eyes that reflect his kind and caring nature. Yūki’s casual school uniform fits his easygoing yet determined personality, often seen with a relaxed posture and a thoughtful expression as he interacts with his friends.
His appearance is unassuming yet approachable, which makes him a relatable character for viewers. He doesn’t stand out for physical attributes but instead for his emotional qualities his attentiveness to others and his willingness to go the extra mile for someone in need.
Personality
Yūki Hase is characterized by his kindness, patience, and unwavering determination. Unlike many of his peers, he sees Kaori Fujimiya not as a burden but as someone worth the effort to befriend. His sincerity in wanting to be her friend, despite the recurring challenges caused by her memory loss, is a defining feature of his character.
Though Yūki can be cheerful and sociable, his true strength lies in his emotional resilience and his ability to empathize with others. He is consistently supportive of Kaori, never growing frustrated or resentful of her condition. His dedication to Kaori’s friendship is both touching and inspiring, showcasing his selflessness and capacity for emotional depth. Over the course of the series, Yūki learns the importance of understanding, persistence, and the sometimes painful nature of relationships.
Role in the Story
The Beginning of the Friendship: Yūki’s story begins when he notices Kaori always eating lunch alone on the school rooftop. After his repeated attempts to talk to her, she finally opens up and explains her condition: she forgets all memories involving her friends every Monday. Instead of being deterred, Yūki decides to try being her friend regardless.
The Weekly Cycle: The heart of Yūki’s journey revolves around the bittersweet cycle of reintroducing himself to Kaori each week. He creates a diary system to help her retain memories and gently encourages her to engage with the people around her. Though this process is emotionally exhausting, he never gives up.
Facing Emotional Setbacks: Yūki’s optimism is tested many times as Kaori’s memory condition causes confusion, sadness, and even tension between them. As they face new challenges, including Kaori’s past and the arrival of old acquaintances, Yūki learns that patience, vulnerability, and understanding are crucial for meaningful relationships.
Relationships
Kaori Fujimiya: Kaori is the center of Yūki’s world. Though she initially pushes him away due to her memory issue, Yūki remains patient and persistent. Their relationship gradually deepens, evolving from a weekly reset into something more emotionally intimate, even as they continue to face setbacks.
Shōgo Kiryū: Yūki’s blunt and stoic friend who often provides grounded advice. Though the two have opposite personalities, Shōgo is one of the few people Yūki confides in about his struggles with Kaori.
Saki Yamagishi: A cheerful and forgetful girl who befriends both Yūki and Kaori. She adds a light-hearted presence to the group and reinforces the theme of cherishing small connections.
