Harunobu as well led his troops to Kawanakajima to support the forces in Asahiyama-jo Castle, and both forces became to confront across the Sai-gawa River (in Nagano Prefecture).
晴信も旭山城の後詰として川中島へ出陣し、犀川(長野県)を挟んで両軍は対峙した。