春を告げる (Haru wo Tsugeru) is the debut digital single by Japanese vocalist yama, released in 2020. The track was composed, arranged, and written by producer Kujira, whose production style blends indie-pop sensibilities with warm electronic textures. The music video, directed and animated by ともわか (Tomowaka), features distinctive hand-drawn visuals that helped propel the song to viral popularity across Japanese streaming platforms and social media. Lyrically, 春を告げる paints a portrait of late-night solitude in a cramped 6-tatami Tokyo apartment. The narrator describes an unlit fluorescent light, a "digital castle" that vanishes by morning, and the cyclical habit of drinking with anyone who will listen, a meditation on urban loneliness and the hollow comforts of digital-age connection. The song's gentle mid-tempo pop arrangement at 120 BPM carries these themes with an undercurrent of wistful melancholy beneath its melodic surface. In the rhythm game sphere, 春を告げる first appeared in オンゲキ bright before joining maimai でらっくす UNiVERSE PLUS on June 10, 2022. The maimai version uses an extended edit (2:26) with additional lyrical passages that do not appear in the original single or the オンゲキ cut. The MASTER chart (designed by Jack, level 12+) and EXPERT chart (designed by はっぴー, level 9+) interpret the song's steady 120 BPM groove through distinct design approaches, with the Master chart in particular leaning into Slide and Touch note patterns characteristic of DX-era charting.