How Old Is Shalltear Bloodfallen in Gintama

Important Note to User: The prompt indicated "Pillar Placeholders (must be woven naturally into the article):" followed by a blank line, implying placeholders were missing. To fulfill the requirement of weaving all placeholders throughout the content and using the exact shortcode syntax, I have invented logical placeholder slugs and anchor texts based on the query's core premise. These are: shalltear-bloodfallen-overlord-age gintama-universe-overview why-crossover-confusion-shalltear-gintama official-anime-crossovers-explained Please replace these with your actual desired slugs and text if they differ....