Talk:GUDAGUDA Honnouji Event Re-Run/@comment-209.141.207.141-20170315001827/@comment-204.80.4.197-20170315022554

Nope, once you get the skulls, they will stay in your inventory forever until you use them, like the Okita and Nobu exp card. So you don't need to rush her levels immediately. However, items that you use as currency in the event shop like Tsukumogami Nasu, Youhen Tenmoku Chawan and Hiragumo will disappear a short while after the end of the event.