Tomomi Ichinose (一ノ瀬 智美 Ichinose Tomomi) is the mother of Takumi Ichinose and Megumi Ichinose. She had to stay in the hospital for many years because of an illness and passed away when Takumi was in 12th grade.

Nana: Cap 69.5
Etymology[]
- The name Tomomi means "wisdom, intellect" (智) (tomo) and "beautiful" (美) (mi).
- Tomomi's surname Ichinose means "one" (一) (ichi) and "swift current, rapids" (瀬) (se).
- ↑ In chapter 37, which takes place in September 2001, Takumi reveales that his mother died 6 years ago.