|Debut||Death Note: OT "Trickery" Chapter 2|
|Birthday||February 14, 2008|
|Also known as||(none)|
|Age||(at start of Our Truths) 14|
|Status at debut||student|
|Will to act||7/10|
Masumi Kiryu is a human featured in Death Note: Our Truths. She is the two-years-younger sister of Haruki.
Masumi is skinny and short. Her eye color is a light color, almost yellow. Her hair is long and brown. Other than that, she looks a lot like her mother, Mikara.
Not much of Masumi's personality is showcased in Our Truths, due to her role. But what is seen, is that she is (when he is introduced) a vocal supporter of Kira. Other than that, her personality is somewhat spontaneous and carefree, something which her father dislikes, and her brother says makes her "too hard to read, too hard to fool".
- Masumi is the youngest character in Our Truths.