If you finished Days and want your next read, these recommendations are not someone's opinion — they are computed from comic-lab's database of every manga published in Japan since 1968, combining three similarity axes (art style, setting, story) with real reader-behavior data.
1. Ace of Diamond (ダイヤのA)
by 寺嶋裕二 · since 2006 · 83 volumes in Japan · publication status unknown
Why it matches: readers who look up this series often move on to it; close in setting & themes and story & tone.
Method: similarity is computed over cover-art embeddings, thematic categories and plot descriptions of 133,000+ works, blended with co-reading behavior. Volume counts and dates reflect Japanese editions and update automatically.