Hashira Ueki perished in a stairwell mishap, only to be reborn in another realm by a benevolent plant deity's grace. Tasked with restoring the deity's dilapidated shrine in his youth, Hashira's singular desire is to lead a tranquil existence, enveloped by nature's embrace. His reincarnation unfolds amidst a sprawling wilderness teeming with lush woodlands, where his extraordinary skills enable him to combat malevolent beings, erect a rustic abode, cultivate crops, and pursue a carefree existence. However, his idyllic routine takes a turn when he aids a sickly high elf who discloses the forest's grisly reputation as the dreaded 'Sea of Death,' infested with ferocious demons. What trials await Hashira in this perilous domain?