Aside from Zenki, he also illustrated the Macross Frontier: Chou Jikuu Uta-Miko Ranka spin-off manga and the Buddy Spirits manga. He also launched the Otomegami Amaterasu manga last April 2017, which was unfinished thanks to the author's sudden passing. With the series unfinished, it is up to the family if the publisher will release the unfinished 14th chapter as well as Kuroiwa's last ideas.
From all of us here, thank you for the memories.
[Source: Anime News Network]