His representative works include Space Battleship Yamato, Super Dimension Fortress Macross, Megazone 23 and Legend of the Galactic Heroes.

[4] For Super Dimension Fortress Macross and Megazone 23, he selected young artists such as Haruhiko Mikimoto, Ichirō Itano, and Toshihiro Hirano (currently Toshiki Hirano), most of whom were amateurs except for Itano, and placed them at the core of the production to create works of youthful sensibility.

[8] His participation in the Space Battleship Yamato project was due to the fact that he was favored by producer Yoshinobu Nishizaki, who had musical experience.

[11] After giving up on his career as a manga artist, he next formed a Hawaiian music band with his friends and began touring cabarets.

[1][5] Ishiguro was the chief director of the TV series Super Dimension Fortress Macross, which began airing in 1982.

[3] Macross was a project developed by Studio Nue and adopted by advertising agency Bigwest, which secured broadcast slots for sponsoring companies and commercial TV stations.

[5] Eventually, the production entity was changed to AIC for the sequel, and only the 2nd studio established with a mechanical specialist group participated from Artland.

[5] Despite producing two hit works in a row, Artland found itself in financial difficulties, and Ishiguro felt disappointed with the in-house production.

[5] In order to concentrate on management, Ishiguro first separated his staff, which had grown to over 50 people, from the studio and made them independent.

[5][16] In addition, the longer production period of the OVA compared to the TV series allowed Ishiguro to concurrently produce the animation and run the studio, and the regularity of the work improved the business situation at Artland.

[5] Around this time, Artland moved from Ōkubo to Musashi Sakai, renting a four-story building, but in February 2000, the second floor was destroyed by the catch a fire from a neighboring newspaper distributor.

[5] Ishiguro gradually stopped working as a director as he grew tired of the animation industry's increasing emphasis on character business.

[5] The studio reached its peak since its inception in the fall when it simultaneously produced three TV series as a prime contractor.