Your Highness, Surviving in Yokohama!

Faine, princess of the Sun Kingdom on the Mysterious Planet, accidentally tears open a dimensional rift while trying to save the out-of-control Solar Crystal, plunging into the Tsurumi River in the world of Bungo Stray Dogs. Soaked and drained of her powers, she is pulled out by a man with mesmerizing eyes who is attempting a “new type of suicide”: Osamu Dazai, wielder of the ability No Longer Human, which can nullify all supernatural abilities. Yet for the first time, he encounters a “light” he cannot erase.

Her purity sears his emptiness.

His darkness sets off her radiance.

Faine's solar power has an extraordinary effect in Yokohama: it can soothe the rampage of Nakajima Atsushi's Beast Beneath the Moonlight, ease the psychological trauma left by Yosano Akiko's treatment, and even make Akutagawa Ryunosuke's Rashomon “gentler.” The forces of the dark world begin turning their attention to this “mobile source of healing,” while her very existence is shaking the deeply rooted philosophies of some people.

Meanwhile, Prince Bright, Prince Shade, and Princess Rein cross dimensions to find her. A knight's protection and a quiet confession, along with the subtle respect of Yokohama's gravity manipulator and the conflicted attraction of a bandage-wasting device, weave a complex web around Faine.

“I like everyone,” Faine says with a smile beneath Yokohama's night sky, a tiny sun resting in her palm. “But my mission isn't to be protected by someone. It's to bring smiles to more faces, even in a world where it seems so hard to smile.”

“If even No Longer Human can't negate your existence, then perhaps I can try affirming this world, too.” This is a story of Osamu Dazai and the light, and of everyone who meets her learning to smile again.