Mangaka 鶴田 謙二, Tsuruta Kenji, artist for the manga Spirit of Wonder, Memories of Emanon, Wandering Island, and Captain Momo's Secret Base. Trained on colored cover illustrations for some of his manga, as well as full color works from a few of his artbooks like 水素-hydrogen.
A lot of his character designs have very similar face shapes and hairstyles, which does bleed through in this LoRA to other characters. He also has a not-at-all-hidden zenra fetish, which this model excels at as a result.