Invited for the cover of this issue is the group of Tomoki Ogoshi at Kanazawa University. The image depicts the crystal‐state host–guest complexation, with guest molecules encapsulated in crystals. Read the full text of the article at 10.1002/chem.201805733. "...host–guest chemistry in the crystal state has been a difficult challenge. In this study, we focused on pillar[5]arene crystals and ventured into this poorly explored field." Read more about the story behind the cover in the Cover Profile and about the research itself on page 2497 ff. (DOI: 10.1002/chem.201805733).