千歳くんはラムネ瓶のなか [Chitose-kun wa Ramune Bin no Naka]

From 2020 to 2025, Square Enix published this eight-issue series, a slice-of-life story centered on the charismatic high school student Saku Chitose and his social circle. Known for its warm, nostalgic tone and character-driven drama, the manga explores friendship, adolescence, and the quiet pressures of popularity. It is most associated with writer Hiromu and artist raemz, whose clean art and expressive character designs defined the series' gentle appeal.