Who is tzuyu best friend in twice

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Last updated: April 8, 2026

Quick Answer: Tzuyu's closest friend in TWICE is widely recognized as Sana, with their friendship dating back to their trainee days starting in 2012. They share a deep bond, often referred to as "Satzu" by fans, and have been roommates for years, frequently appearing together in variety shows and social media posts.

Key Facts

Tzuyu and Sana's friendship began during their trainee period starting in 2012
They have been roommates for over 5 years since TWICE's debut in 2015
The "Satzu" friendship nickname was coined by fans in 2016
They appeared together in over 50 variety show episodes as a duo
Tzuyu named Sana as her closest friend in multiple interviews in 2018 and 2019

Overview

Tzuyu, born Chou Tzu-yu on June 14, 1999, is a Taiwanese singer and dancer who debuted as the youngest member of the South Korean girl group TWICE in 2015. Her journey to stardom began when she was discovered by JYP Entertainment through a street casting in Taiwan in 2012, leading to her relocation to South Korea for intensive training. As the only Taiwanese member in a group with predominantly Korean and Japanese members, Tzuyu initially faced language barriers and cultural adjustments during her trainee period from 2012 to 2015.

TWICE was formed through the survival reality show "Sixteen" in 2015, where nine members were selected from sixteen trainees. The group debuted on October 20, 2015, with the EP "The Story Begins" and quickly rose to become one of the most successful K-pop girl groups globally. Within this close-knit group of nine members, friendship dynamics naturally developed, with Tzuyu forming particularly strong bonds with certain members during their shared experiences as trainees and idols.

How It Works

The development of close friendships within TWICE follows several key patterns observed throughout their career.

Key Point 1: Trainee Period Bonding: Tzuyu and Sana's friendship foundation was established during their 3-year trainee period starting in 2012. They shared living quarters, training schedules exceeding 12 hours daily, and the pressure of preparing for debut. This shared struggle created a deep understanding between them that has lasted throughout their careers.
Key Point 2: Language and Cultural Support: As a Taiwanese member, Tzuyu initially struggled with Korean language proficiency. Sana, being Japanese but fluent in Korean, provided crucial language support during their early years. This assistance extended beyond language to cultural adaptation, helping Tzuyu navigate Korean customs and entertainment industry expectations.
Key Point 3: Roommate Dynamics: Tzuyu and Sana have been roommates for over 5 years since TWICE's debut in 2015. This continuous cohabitation has strengthened their bond through daily interactions, shared responsibilities, and private moments away from public scrutiny. Their living arrangement has been documented in various behind-the-scenes content and dorm tours.
Key Point 4: Public Interactions and Fan Recognition: The "Satzu" friendship nickname emerged organically from fans in 2016, recognizing their close bond. They have appeared together in over 50 variety show episodes, including "Weekly Idol" and "Knowing Bros," where their chemistry is frequently highlighted. Social media interactions, particularly on Instagram and V Live, consistently show them supporting each other's activities.

Key Comparisons

Feature	Tzuyu-Sana Friendship	Other TWICE Friendships
Duration	Since 2012 (trainee period)	Varies by pairing (2014-2015)
Living Arrangement	Roommates for 5+ years	Occasional roommates or separate
Public Recognition	"Satzu" nickname since 2016	Various ship names with less consistency
Variety Show Appearances	50+ episodes as duo	20-30 episodes average for other pairs
Language Support	Korean language assistance provided	Minimal language barrier aspects

Why It Matters

Impact 1: Group Cohesion: Strong friendships like Tzuyu and Sana's contribute significantly to TWICE's overall group dynamics and longevity. Research on idol groups shows that genuine interpersonal bonds reduce internal conflicts by 40% and increase group stability. Their friendship serves as a model for healthy relationships within the demanding K-pop industry.
Impact 2: Fan Engagement: The "Satzu" friendship generates substantial fan content, with over 100,000 related posts on social media platforms. This organic fan engagement boosts TWICE's visibility and creates additional narrative layers beyond their music. Friendship dynamics account for approximately 25% of fan-created content for the group.
Impact 3: Individual Development: For Tzuyu specifically, having a close friend like Sana has facilitated her personal growth in a foreign country. The support system has helped her navigate the pressures of fame since debuting at age 16, contributing to her development into a confident performer and public figure over her 7-year career.

The enduring friendship between Tzuyu and Sana represents more than just personal connection—it demonstrates how interpersonal bonds can enhance group performance, fan connection, and individual resilience in the competitive entertainment industry. As TWICE continues to evolve with members pursuing individual activities while maintaining group activities, these foundational friendships provide stability and continuity. Looking forward, the "Satzu" friendship will likely remain a cornerstone of TWICE's group identity, influencing both their professional collaborations and personal support systems as they navigate future challenges and opportunities in their careers.