son goku, vegeta, son gohan, trunks, and trunks (dragon ball and 1 more) drawn by nakatsuru_katsuyoshi and toriyama_akira

Danbooru

Resized to 30% of original (view original)

Artist's commentary

Original

My HQ scans from :

Dragon Ball Kiniro no Senshi TV Anime illustration

Akira Toriyama & Katsuyoshi Nakatsuru📚🐉

egin kogan

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For an extra detail, according to the original poster of the scan, Toriyama did the linart while Nakatsuru did the colors.