Yuuna Yuuki

Yuuna is a student at Sanshu Middle School and is also Tougou's next-door neighbor. Yuuna is very knowledgeable about flower language and enjoys flower pressing, which she learned from her mother. She is also very physically fit and active, having learned martial arts from her father. Yuuna scored the highest of anyone tested on the Hero Aptitude exams, causing the Taisha to relocate the Tougou family next door to her so that she and the former hero Tougou would be acquainted.

Yuuna is a fair-skinned teenage girl of slightly below average height. She has amaranth-red eyes and shoulder-length hair of different hues: in civilian form, her hair appears amaranth-red in color; in Hero form, her hair now appears pinker in color. She also dons a flower petal-shaped hair clip, which noticeably increases in size while in Hero form.

Her Hero outfit is white and pink, with a pink armored breastplate and a white long coat with a pink gradient. She also has black spats with pink bands at the mid-thigh area, and armored gauntlets and greaves. Her Mankai gauge is located on her right fist and takes the shape of a pink cherry blossom.

In her Mankai form, she wears a long, pink, flowing kimono-like dress with flowing, partially-detached sleeves and has a golden ring above her head, which are attached to two gigantic, mechanical armored fists.

When gaining the burden from the sky gods, she had a strange, sun-like symbol seemingly burned onto her skin, located on the left side of her chest. Its burnings then continued to extend all the way across her abdomen, creating a swirling pattern.

Yuuna is an energetic, kindhearted girl who jumps at the chance to help others. She is extremely loyal to her friends, family and to the Hero Club, and fights to protect them without a second thought regardless of the risks to her own safety. Yuuna is good at reading people's emotions, and will often exaggerate her naivete and childishness in order to brighten the mood. Yuuna is also not above telling white lies for the sake of her friends. In truth, Yuuna is scared of dying, and being alone.

Yuuna fights using armored gauntlets and greaves for powerful close-range combat. Her first fairy, Gyuuki, allows her to condense energy in her fist and release it in a punch, her signature technique which she calls the "Hero Punch." Yuuna's second fairy, Kasha, allows her to gather energy in her foot and release it in a fiery explosion, a technique which she dubs the "Hero Kick."

Yuuna's Mankai form grants her two gigantic armored fists which deal devastating blows to anything they hit. As a result of using her Mankai in Episode 5, Yuuna loses her sense of taste, while her usage of it in Episode 12 cost her the use of her legs.

When granted her final mankai by the Shinju, she is able to do a Hero Punch with the wishes of the hero club, represented by the flowers of the heroes. It is able to destroy gods but dissipates the Shinju.

Fairies

Gyuuki (牛鬼): A white cow spirit with a pink flower marking on its side. Gyuuki is mischievous and comes out of Yuuna's terminal of its own volition, unlike the other fairies. It is also extremely voracious and will attempt to eat any and everything, including the other fairies.

Kasha (火車): A pink fire-cat spirit. Like Gyuuki, Kasha is stated to be an ill-behaved troublemaker.