Shunzen Tachihara

Shunzen Tachihara was the older brother of Michizō Tachihara. He was a soldier during the Great War.

Appearance
He has short dark brown spiky hair. During the battle, he wears the typical military uniform consisting of military clothing, a hat and boots. He also wears a dog tag. He has two white bandages on his face, one on the left side of his forehead and the other one on his lower left chin.

Personality
He always wears a calm expression and gives off a quiet aura.

Ability
From what we see in the manga, it seems he can produce things made of metal from between the pages of a book. He created Yosano's hairpin, which Yosano still wears, in this manner.

In an interview from 2019, Harukawa 35 called the Tachihara brothers' abilities "exactly the same," implying his ability is more similar to Michizou's than it appeared in our brief glimpse of its use.

History
He is approached by Yosano while reading a poetry collection, to which the latter says that if he is all better, he should go back to the battle. Shunzen thanks Yosano for healing him and presents her with a gift. He then reveals about the skill doctrine and is the reason why Mori brought her to the battle. Mori was unhappy that Shunzen read his "Immortal Regiment" treatise. Confused, Yosano asks about the Immortal Regiment and the upper brass. However, Mori dragged her, telling her that more casualties needed her ability.

Shunzen continued fighting with the other soldiers and was caught in an explosion. Upon waking up, he saw Yosano and asked about the condition of others. Yosano, tired and traumatized, asked how she could be an angel since it was like she was just healing them for them to be killed again. Shunzen pulls out of what seems to be a and tells her that he keeps a tally of every time she saves him, thanking her for being there with them. Another soldier then calls him to get back to the battle.

He continued to fight in the battle - eventually getting injured again. Yosano sees his condition and says that she doesn't want to save him. However, she was forced by Mori to heal him by shooting him. Eventually, he relays a message through a to Yosano and describes her as an angel of death who controls the battlefield. He then relays his message to tell his family goodbye. Yosano rushes to the room and sees Shunzen dead with his dog tag and a note that says, "You are too correct", denouncing her.

Quotes

 * (to Akiko Yosano) "I'm keeping count of the times you saved my life. This time makes exactly five. I like this character and its meaning - correct. Everytime you complete a tally, you add one more "correct" thing to the world. This shows how correct you are. Without you, I'd never see my parents and brother back home again. I'm glad you're here for us."

Trivia

 * Harukawa's original character design for Shunzen was more physically fit, but Asagiri requested she make him look "like a good guy Fyodor."
 * Michizou Tachihara's real-life older brother's name was Ichiro Tachihara. Ichiro died at the age of 3, the year before Michizou was born.
 * Shunzen was unnamed until Big Brother's Day 2023 when the official twitter account shared the name Asagiri had given him. The Kanji for his name means "spring cicada," a species of cicada which hatches - and consequentially dies - before most other species of cicadas.