Talk:JoJo's Bizarre Adventure: Diamond Records/@comment-32826152-20171211053511/@comment-918683-20171211082350

I'd say that's pretty lucky. You can see the chances of getting a particular character by clicking on the Gasha Details tab (ガシャ詳細). Looks like Jonathan either has a 0.037% chance (regular Gasha) or a 0.007% chance (5-star Jotaro/4-star Koichi Assist boost Gasha).