
Quick answer — Tomoe Tamiyasu voices Makina Irisu in The Fruit of Grisaia, Rin Natsume in Little Busters!, Nagisa Hanamiya in In Search of the Lost Future and 3 more characters.
Tomoe Tamiyasu voices Makina Irisu (The Fruit of Grisaia), Rin Natsume (Little Busters!), Nagisa Hanamiya (In Search of the Lost Future), Satoko Kazami (The Labyrinth of Grisaia), Mishima (Charlotte), Futami Moriyama (Recorder and Randsell).
Makina Irisu is voiced in Japanese by Tomoe Tamiyasu.