The pairing "Adumbral and Crimson" reads like two complementary principles or dual aspects of one entity:
Together, they suggest a being who moves through shadow but leaves a red trail—a lurking presence that is nonetheless vividly marked. In occult terms, one might think of the Lurker at the Threshold (adumbral) plus the Blood of the Covenant (crimson). In psychological terms: repression (adumbral) and eruption (crimson).
"Adumbral and Crimson -v1.5- -lavey otokonoko-" appears to be a niche, stylized title that blends dark/gothic aesthetics with genderplay themes. Interpreting the components:
(masterpiece, best quality), 1boy, otokonoko, adumbral, crimson accents, gothic, lavey aesthetic, dark lipstick, choker, [desired pose], [desired background]
Negative prompt: nsfw, lowres, bad anatomy, extra limbs, ugly, mutation, watermark, text, fat, muscular, realistic skin texture