Moka Suga, born March 3, 2016, to Keisuke Suga and the late Asuka Mamiya, had her childhood growth meticulously marked on a wooden pillar—70.8 cm at one year, 82.4 cm at two, and 89.1 cm at three. After her mother’s passing, custody shifted to her maternal grandmother, Mrs. Mamiya, against Keisuke’s protests. Though their interactions grew sparse, Moka cherished her father’s visits, maintaining a resilient cheerfulness. Asthma confined her indoors during rains, yet she filled her days weaving daisy chains and nurturing friendships like her bond with the older Nagi Amano. On August 21, 2021, a reunion with Keisuke at Shiba Park introduced her to Hina Amano and Hodaka Morishima; there, she thanked Hina for summoning sunshine, granting her a rare afternoon of outdoor play. By 2024, Keisuke hinted at frequent outings with Natsumi Suga, Nagi, and Moka despite relentless rains, implying tentative reconciliation. Conflicting reports from the light novel, however, suggest she might still live with her grandparents. Initially petite with brown curls, wide brown eyes, and vivid cheek blush, Moka wore a blue seifuku dress and navy socks. Over three years, her height increased, her hair lengthened, and her blush softened. Her name, blending “sprout” (萌) and “flower” (花), mirrors themes of growth, while her surname merges “necessity” (須) and “joy” (賀). The shared “flower” kanji with her mother, Asuka, quietly honors their bond.