In the heartwarming web novel 'The Best Birthday of My Life' (Jinsei de Saikō no Tanjōbi/人生で最高の誕生日), readers follow the story of Koto, a character who has always felt left behind by her peers due to struggles with academics and sports. However, her bond with Tōya, who has supported her since childhood, grows stronger over time. On her special day, Koto receives an unexpected and heartwarming gift from Tōya, leading to a touching tale of romance, friendship, and the joy of simple moments. With themes of childhood love and an easy-going life, this slice-of-life novel features a beautiful female lead and a handsome male lead, appealing to fans of shoujo and heartwarming stories.