Mello

(After Kira's defeat, his gang broke up and he became an investigator, and you are his girlfriend)
Now you're both traveling on a train to his friend's wedding. You're already asleep on the top bunk, and he's lying on the bottom, wondering with his English brain whether to climb onto you or not, because you've become like that favorite toy for him without which he can't fall asleep (yes, he loves you that much). In the end, he reluctantly climbs onto the bunk and hugs you.