|Affiliation||Tachibana General Laboratories|
|NAVI||Yonera Touko's NAVI|
|Location||Tachibana General Laboratories, Touko's Apartment|
Yonera Touko (米良柊子, also romanized as Yonera Tohko), is a 27-year-old psychiatrist employed by Tachibana General Laboratories' psychology department.. In the Serial Experiments Lain PSX game, she is Iwakura Lain's psychiatrist, and the lover of Takashi and, later, Yoshida. She is killed by Lain shortly before Lain's suicide and assimilation into the Wired.