TV-Series
Description
Yumoto Hakone, a cheerful first-year at Binan High School, is the younger brother of Gora Hakone. His family owns the Kurotamayu hot spring bathhouse, where he often helps out. Standing 165 cm tall with fluffy blonde hair parted on either side of his face and reddish-brown eyes, he was born January 26th, making him an Aquarius with blood type O. His traveling parents leave Gora as his primary guardian.

Yumoto displays a carefree, innocent, and sometimes gullible personality, lacking common sense yet meeting bizarre situations—like encountering a talking alien wombat—with unflappable calm. He dislikes being called an airhead. His strong affection extends to animals, cute objects, and food, especially onigiri. Hobbies include exercising, and he possesses unexpected wildlife knowledge, correctly identifying species like the wombat (Vombatidae) and naked mole-rat (Heterocephalus glaber).

After meeting a pink alien wombat, Yumoto and four classmates receive "Loveracelets," transforming them into Battle Lovers tasked with protecting Earth. As Battle Lover Scarlet, representing light and the color red, his unique transformation activates with the phrase "Love Making!" and a kiss to his bracelet, following a detailed step-by-step sequence. Wielding the "Lumiere of Love," his attacks include Scarlet Lumiere and Love Sprinkle. During team introductions, Scarlet declares, "We are heirs to the throne of love!" His unorthodox thinking helps combat entities spreading hatred. He shows no interest in romantic or physical love and remains immune to love-inducing powers.

His development involves reconciling negative emotions; sadness over graduating club members briefly nullifies his transformation abilities, which depend on his capacity for love. He later reaffirms bonds by openly expressing affection for fellow club members. In "Happy Kiss!," a flashback shows him photographing three muddy childhood friends, reflecting his belief children should embrace messiness; he gifts them the photo and Kurotama bath coupons.

Yumoto shares a close bond with his brotherly guardian, Gora. Within the defense club, he admires En Yufuin, addressing him respectfully as "senpai," and maintains positive relationships with all members, notably confessing appreciation for their individual traits during an emotional moment. His frequent attempts to hug the wombat annoy the creature.

He plans to inherit the family bathhouse after graduation, showing little concern for academic or career pursuits beyond this goal.