I saw these flowers but assumed they were Abelias because they're among Abelia flowers. But these are much tinier than Abelias (see the 3rd photo) and their shape is different. They're queen coralbead (Cocculus trilobus). In autumn, the queen coralbead produces green fruits which turn deep purple like smaller blueberries but are toxic.
 |
| Queen coralbead (Cocculus trilobus) アオツヅラフジ（青葛藤） |
