Found any facts or articles that are in Japanese, then send them to shmuplations.com!

[ProtoSnake]

An update for this Month's June:

http://shmuplations.com/irem/
Irem Arcade Games – 1989 Developer Interview, originally featured in Gamest #30
Tetsuo Nakano – Development Chief / Executive Director
Kozo Okada – Planning Development Section Chief
Michiru Kawai – Planning Section Chief
Kanae Saeda – Sales
Masato Ishizaki – Sound/Composer
Yoshiyuki Takashima - Irem President

http://shmuplations.com/egg/
Elemental Gimmick Gear – 1999 Developer Interview, originally featured in the E.G.G. Complete Guide
Hiroaki Hara – Scenario Writer/Planner/Supervisor
Hidetsugi Watanabe – E.G.G. Design/Game Design

http://shmuplations.com/lennus/
Lennus – 1992 Developer Interviews, originally featured in The Super Famicom and the official guide
Shinji Ogawa – Producer
Hidenori Shibao – Director/Writer

Lennus – 1992 Developer Interviews, taken from the Original Strategy Guide (jp)
Part 1 – Hiroyuki Katou and Keisuke Gotou
Part 2 – Kouhei Tanaka (Composer)
Part 3 – Shuuji Imai (Monster Designer)