Junko Kusayanagi is a Japanese voice actress born on January 11 in Kanagawa Prefecture, Japan. She is also known by her legal name, Junko Nakata. Her blood type is AB. Kusayanagi began her career in the early 2000s and became prominently known for her extensive work in adult visual novels and original video animations (OVAs). She was formerly affiliated with the talent agency Yellow Tail.

Kusayanagi's voice acting work is characterized by a soft, warm, and gentle vocal quality, which often led to her being cast in calm and mild-mannered roles. She has demonstrated versatility as a performer, capable of handling both comedic "straight man" and "funny man" roles in radio programs.

Her career is distinguished by a high volume of roles in adult computer games, where she has amassed hundreds of credits. According to her profile, she has voiced characters in numerous visual novels across multiple years. This includes roles such as Akemi Hasegawa in Pia Carrot e Youkoso!! 3, a game in which she also reprised her role for the animated film adaptation, a rarity in an industry where cast members often changed for such projects. Other notable game roles include Sagisawa Yoriko in D.C. ~Da Capo~, Rokujo Miyaho in Kono Aozora ni Yakusoku o, and Aroe Yasaka in Swan Song.

Her work in OVA and anime productions is extensive and closely tied to her game roles. A comprehensive list of her anime and OVA roles includes the specific characters mentioned in the query:
Yui Shirakawa in Four for Fourplay
Akemi Hasegawa in Pia Carrot e Yōkoso!! - Sayaka no Koi Monogatari
Akari Ayabe in Maid to Please
Inaho Takebe in Dark Future
Mikoto Amagasaki in Tsuki wa Higashi ni Hi wa Nishi ni - Operation Sanctuary
Rei Misaki in Shikatte Ingo
Maki Katsuragi in Rinkan Club
Risa Tomosato in Sweet Home: H na Onee-san wa Suki Desu ka?

Her other significant voice roles in animation include Mifu Wakabayashi in Suika, Tamae Akiyoshi in Akiba Girls, Sana Kaizu in _Summer, Yui Shirakawa in Aneimo, and Nagisa Miyatsuka in Koiiro Chu! Lips.

Beyond acting, Junko Kusayanagi also hosted a radio program titled Junko Kusayanagi no Wakuwaku Game Life, which was also released on DVD. She is known to have a close friendship with fellow voice actress Mahiru Kaneda and has a personal fondness for cats.