im pretty sure kakyoin just brushes over jotaros leg in the painting as his stand attacks, furthermore its shown that the painting was for show and didnt mean anything he then throws it away and destroys it. his stand also has no abillity that would allow him to attack people through paintings
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im pretty sure kakyoin just brushes over jotaros leg in the painting as his stand attacks, furthermore its shown that the painting was for show and didnt mean anything he then throws it away and destroys it. his stand also has no abillity that would allow him to attack people through paintings