What would 追番" translate to? It was displayed next to a heart icon on bilibili. From consulting a dictionary I believe hui in this context is pursue and fan is a measure word? I assume it means something like follow/subscribe but I would appreciate an explanation
番剧 refers to TV shows that come in multiple episodes and sometimes multiple seasons
追番 obviously means "follow series"
番剧- originally an anime fandom term: アニメ番組 (anime series)
追 means "track (an TV show)".
新番 is originally from Japanese word 新番組. (Japanese word 番組 originally means "programs".) 新番 first be used as its original meaning, new programs. But it later been misused as the short of アニメ新番組, new TV anime (or even new anime).
If you saw this word on any ACG related website. It should probably means that "track this TV anime for next episodes".