sync: span <-> b
sync: span <-> b

vampiricwulf/tanoshiine,vampiricwulf/tanoshiine,vampiricwulf/tanoshiine,vampiricwulf/tanoshiine,vampiricwulf/tanoshiine,vampiricwulf/ex-tanoshiine,vampiricwulf/ex-tanoshiine,vampiricwulf/ex-tanoshiine,vampiricwulf/ex-tanoshiine,vampiricwulf/ex-tanoshiine