While not the origin, daytime soap operas perfected the literal coma. Characters would be comatose for months, only to wake up with amnesia (a sub-trope known as the "Mobi Coma Amnesia Double-Whammy"). The romance hinged on the "miracle moment"—the fluttering eyelid, the squeezed finger. Yet modern soaps have deconstructed this. In One Life to Live, when a character woke from a long coma, their spouse had remarried. The storyline became a legal and emotional battle over which marriage was "valid." This reflects the real legal gray area of mobi coma relationships.
Before diving into storylines, we must differentiate between the two primary interpretations of "mobi coma" in relationship discourse: mobi coma sex com
This is the most common ship that fits the "Mobi" sound profile (Momo + Boku no Hero). While not the origin, daytime soap operas perfected
This is the art-house extreme. The protagonist has locked-in syndrome—fully conscious but entirely paralyzed, a "mobile mind in a comatose body." The romantic storyline is tragic: his wife leaves, but his mistress stays. The film questions whether a comatose body can feel love. The answer is ambiguous. The wife leaves because she cannot endure the ambiguous loss; the mistress stays because she can project a fantasy. Neither is judged. This film is essential viewing for writers of mobi coma romance because it refuses a happy ending. This is the art-house extreme