B00D3Y762A,,15,5166-NVCv5LB00D3Y75IK,,15,51tsMImd4mLB00D3Y75IA,,15,51D-Fxz6W0LB00D3Y75IU,,15,51Wc644qJxLB00D3Y75GW,,15,518fztLACqLB00D3Y75LC,,15,51V+cPGeuWLB00D3Y75HQ,,15,51lWzWlWG0LB00D3Y75US,,17,51VhjmxvB8LB00D3Y75HG,,15,51nmqi6yYpLB00D3Y75JE,,15,519d2p8zL0LB00D3Y75J4,,15,51jiseUVXGLB00D3Y75OE,,15,51xk3FE11-LB00D3Y75R6,,17,51v-j+EQHbLB00D3Y75SK,,19,514OPNQhAMLB00D3Y75V2,,19,51WU0uva9sLB00D3Y75OO,,15,51ALNeCwbmLB00D3Y75U8,,17,51VyyiraDeLB00D3Y75XA,,19,510fTjihoTLB00D3Y75YY,,15,51APYb5r0ELB00D3Y760C,,15,51gNHBuyBALB091CJRXNK,,15,517ZlVNkJ8LB00D3Y76DO,,15,51xBh9K7eWLB09GR86GT1,,24,51ZNUINRFJLB00D3Y76E8,,3,51k9KWh0-CLB08GYFF4Q7,,15,51OO-lukfsLB00D3Y76F2,,3,51YZnv8PMeLB00D3Y76GQ,,6,51LfMVIxthLB00D3Y76HA,,1,51AYLcqW6QLB00D3Y76EI,,6,513smiaTY-LB00D3Y76MU,,3,51S+D3anOwLB00D3Y76J8,,3,51S95yE7FiLB00MM3QPRU,,1,51WTOtObu7LB00D3Y76KW,,17,51fLBTRjY1LB00D3Y76KM,,6,51ChKcziiBLB00D3Y76K2,,3,51RMRr2qoXLB0856WN72J,,24,511-Bq9DkILB00GWWHH0G,,1,51d329zNWNLB00JRSPQ46,,6,516EjI3TEALB0158EKR7S,,1,61qH3Oikr2LB00M84FLM8,,6,51IxEKMHGrLB00M84FLG4,,3,51xGiH8JXILB00JRSPP5Q,,1,51xOd1CtWmLB00D3Y76MK,,3,519k4Zh+MCLB07NVGSQ17,,20,518s9IVWZ2LB00JRSPP4C,,3,51hCqe7MGbLB075M5YC5Q,,3,51tOdWKC3fLB00VWC5J0Q,,1,616MaePVMQLB00QT36H5O,,6,51r9jXq-B8LB07LBVX4Z9,,22,51AqQLbRYhLB07X34MY42,,15,51r58tjJBOL
Reader Store の「【むこうぶち25周年特別企画】 1~56巻1日限定無料フェア」に連動したものだと思われます。Reader Store だと「1日限定」と銘打ちながら5/26までだったりするので謎です。