{"schema_version":"bf_book_companion_v1","release_id":"20260402T191500Z-bisacv2site-fullset","book":{"amazon_purchase_url":"https://www.amazon.com/dp/1974741400?tag=bookfrontier-20","asin":"1974741400","authors":["Shikke"],"book_id":"9781974741403","canonical_url":"https://bookfrontier.com/books/9781974741403","cover_image_url":"https://img.bookfrontier.com/9781974741403.jpg?v=20260402T191500Z-bisacv2site-fullset%3A2026-04-05T16%3A15%3A58Z","description":"A drunken dare turns into a college student’s chance to confront his own sexuality—by visiting a male brothel! For college student Haiga, starting school in the big city is a chance to make new friends and try new things. On the first day of classes, he spots an impossibly gorgeous upperclassman named Kanae strumming a guitar and decides to join the school’s rock band. But later, when a drunken dare gives Haiga the opportunity to visit a male brothel, he finds his crush employed there as a sex worker! Haiga lets Kanae introduce him to gay sex, and afterward his innocent crush on Kanae is replaced with a whole new type of attraction. Even as their bond outside the brothel strengthens, Kanae will only be intimate inside its confines—and only in certain ways. What will it take for the two to go beyond experimentation and forge a real relationship?","forthcoming":false,"isbn13":"9781974741403","publication_date":"20231212","publisher":"SuBLime","slug":"pink-heart-jam-vol-1","subtitle":"","title":"Pink Heart Jam, Vol. 1"},"discovery":{"categories":{"all":[{"bisac_code":"CGN009020","confidence_band":"medium","label":"Gay Graphic Novels","score":0.8514,"source":"bisac_hint_model"},{"bisac_code":"CGN004210","confidence_band":"medium","label":"Yaoi Manga","score":0.8459,"source":"bisac_hint_model"},{"bisac_code":"CGN004130","confidence_band":"medium","label":"LGBTQ+ Manga","score":0.8249,"source":"bisac_hint_model"}],"hint":[{"bisac_code":"CGN009020","confidence_band":"medium","label":"Gay Graphic Novels","score":0.8514,"source":"bisac_hint_model"},{"bisac_code":"CGN004210","confidence_band":"medium","label":"Yaoi Manga","score":0.8459,"source":"bisac_hint_model"},{"bisac_code":"CGN004130","confidence_band":"medium","label":"LGBTQ+ Manga","score":0.8249,"source":"bisac_hint_model"}],"publisher":[{"bisac_code":"CGN004090","confidence_band":"high","label":"Romance Comics","score":1,"source":"onix_publisher_code"},{"bisac_code":"CGN004210","confidence_band":"high","label":"Yaoi Manga","score":1,"source":"onix_publisher_code"},{"bisac_code":"CGN009020","confidence_band":"high","label":"Gay Graphic Novels","score":1,"source":"onix_publisher_code"}]},"genres":[{"label":"Gay Graphic Novels","score":0.8514,"slug":"gay-graphic-novels"},{"label":"Yaoi Manga","score":0.8459,"slug":"yaoi-manga"},{"label":"LGBTQ+ Manga","score":0.8249,"slug":"lgbtq-manga"}],"reader_fit":["Good for readers who enjoy Gay Graphic Novels","Good for fans of Manga","Good for readers who enjoy Gay Graphic Novels and Yaoi Manga."],"related_lists":[{"intro":"","slug":"shelf-cgn009020-lgbtq-gay","title":"Lgbtq++ Gay Books","url":"https://bookfrontier.com/lists/shelf-cgn009020-lgbtq-gay"},{"intro":"","slug":"shelf-cgn004210-yaoi","title":"Yaoi Books","url":"https://bookfrontier.com/lists/shelf-cgn004210-yaoi"}],"series":null,"similar_books":[{"authors":["Shikke"],"book_id":"9781974743285","cover_image_url":"https://img.bookfrontier.com/9781974743285.jpg?v=20260402T191500Z-bisacv2site-fullset%3A2026-04-05T16%3A15%3A58Z","score":30.5245,"title":"Pink Heart Jam, Vol. 2","url":"https://bookfrontier.com/books/9781974743285"},{"authors":["SHOOWA,","Hiromasa Okujima"],"book_id":"9781974725892","cover_image_url":"https://img.bookfrontier.com/9781974725892.jpg?v=20260402T191500Z-bisacv2site-fullset%3A2026-04-05T16%3A15%3A58Z","score":22.1691,"title":"Bad Boys, Happy Home, Vol. 3","url":"https://bookfrontier.com/books/9781974725892"},{"authors":["SHOOWA","Hiromasa Okujima"],"book_id":"9781974724017","cover_image_url":"https://img.bookfrontier.com/9781974724017.jpg?v=20260402T191500Z-bisacv2site-fullset%3A2026-04-05T16%3A15%3A58Z","score":22.1531,"title":"Bad Boys, Happy Home, Vol. 2","url":"https://bookfrontier.com/books/9781974724017"},{"authors":["Teki Yatsuda"],"book_id":"9781974762613","cover_image_url":"https://img.bookfrontier.com/9781974762613.jpg?v=20260402T191500Z-bisacv2site-fullset%3A2026-04-05T16%3A15%3A58Z","score":21.2989,"title":"Sleeping on Paper Boats, Vol. 2","url":"https://bookfrontier.com/books/9781974762613"},{"authors":["Mamita"],"book_id":"9781974749881","cover_image_url":"https://img.bookfrontier.com/9781974749881.jpg?v=20260402T191500Z-bisacv2site-fullset%3A2026-04-05T16%3A15%3A58Z","score":20.9565,"title":"The Metalhead Next Door","url":"https://bookfrontier.com/books/9781974749881"},{"authors":["Harada"],"book_id":"9781634423144","cover_image_url":"https://img.bookfrontier.com/9781634423144.jpg?v=20260402T191500Z-bisacv2site-fullset%3A2026-04-05T16%3A15%3A58Z","score":19.424,"title":"The Song of Yoru & Asa","url":"https://bookfrontier.com/books/9781634423144"},{"authors":["Yoriko"],"book_id":"9781634423953","cover_image_url":"https://img.bookfrontier.com/9781634423953.jpg?v=20260402T191500Z-bisacv2site-fullset%3A2026-04-05T16%3A15%3A58Z","score":19.3614,"title":"Terano-kun & Kumazaki-kun","url":"https://bookfrontier.com/books/9781634423953"},{"authors":["Mita Ori"],"book_id":"9781642757569","cover_image_url":"https://img.bookfrontier.com/9781642757569.jpg?v=20260402T191500Z-bisacv2site-fullset%3A2026-04-05T16%3A15%3A58Z","score":16.9658,"title":"Our Dining Table","url":"https://bookfrontier.com/books/9781642757569"}],"topics":[{"evidence_refs":["keyword:boys love"],"label":"Boys","score":0.2278,"slug":"boys"},{"evidence_refs":["keyword:boys love"],"label":"Love","score":0.1955,"slug":"love"},{"evidence_refs":["keyword:sublime manga"],"label":"Manga","score":0.1399,"slug":"manga"},{"evidence_refs":["keyword:lgbtq"],"label":"Lgbtq","score":0.0827,"slug":"lgbtq"},{"evidence_refs":["keyword:lgbt"],"label":"Lgbt","score":0.0669,"slug":"lgbt"}],"what_you_get":["Themes: Boys, Love, Manga.","Reading lane: Gay Graphic Novels and Yaoi Manga.","Publisher: SuBLime."]},"llm_signals":null,"source_presence":{"amazon":true,"book_detail":true,"goodreads":true,"llm_signals":false,"similarity_seed":true},"stats":{"amazon_ratings_count":306,"goodreads_ratings_count":2931,"goodreads_reviews_count":316,"quality_score":0.9469}}