Tsuyu is a straightforward and aloof individual who always speaks bluntly about her mind and what she thinks about others. Tsuyu prefers to be called "Tsu", but only by people she views as friends. Tsuyu's parents were always busy at work, requiring her to become the caretaker of her two younger siblings at a young age. Under these circumstances, Tsuyu grew into a highly mature and responsible individual who could divide her attention between school and home duties without letting one intervene with the other. This also means that Tsuyu knows how to lead and look after people, keeping them safe and at ease if they don't feel so. She has strong morals, goals, and principles and is willing to oppose her friends to defend them from decisions she considers rash. Tsuyu is noticeably calm and collected, being able to stay levelheaded and focused even during the most stressful situations. An honor student since middle school, Tsuyu has great judgment, can communicate her intentions easily, and is rarely moved by emotion, making her an incredibly dependable ally who's capable of covering for a partner's weaknesses. However, even Tsuyu has limits when it comes to staying composed, having broken down in despair or heartbreak a few times. Her words may also come off as unintentionally harsh thanks to her blunt honesty, resulting in her feeling guilty and regretful when she speaks out against her friends. Her usual expression consists of a vacant stare, which makes reading her thoughts and emotions difficult for those around her while also creeping them out in the process. Tsuyu has a habit of tipping her finger against her mouth while speaking, pondering, or showing curiosity. She tends to say "ribbit", emulating a frog's croaking, at the end of her sentences, or as a replacement for many of her single-word replies.