I think the Can't Pick Up Girl in a Dungeon OVA story could be a standalone tale or a continuation of certain storylines from the main series. It could also introduce new elements to keep fans engaged.
Maybe you haven't found the right source or platform to access it. Sometimes, certain stories might be restricted based on your location or subscription status.
The 'Don't Pick Up the Soap' manga could be significant for its unique art style, complex characters, or the way it challenges conventional storytelling. It might also offer insights into uncommon or overlooked aspects of life.
Sometimes in a story, not picking up the phone creates suspense. Maybe it's a call from someone the character is avoiding, or it could disrupt an important moment or plan they have.