This is a kissing trope most common in anime and manga; the setting is a bedroom, or simply a place to rest, and two characters, one often harboring unrequited feelings for the other. The premise is that one character is unconscious, whether previously knocked out, feverish, comatose, or simply asleep; the other falls for 'their attractive sleeping face', and unable to resist, leans in to lock lips... It is not unknown for the other person to be feigning sleep when they realize that the character might kiss them. Sister Trope to Converse with the Unconscious.