//I was about to let Pai answer this until I realized it was directed at MEāāLettuce is practically theĀ embodimentĀ of hope. she doesnāt want to fight the aliens, she has hope that things could be different, and Pai sees this and admires it; but he doesnāt believe there is such a hope. sheās different than the other mews, her heart is kind and her words are pure and true, and he even states in episode 51Ā āif we had lived in a different era, no thatās foolishā ā he was musing aloud about Lettuce, about if things had been different then maybe THEY could be different, but he feels he cannot afford such foolish daydreams because his people are what matter; not his feelings for the enemy. she was something that surprised him; he didnāt expect any human to be like HER. it was her HOPE that got his attention. her kind heart. her LOVE for everything. and there at the end he finally realized that her hope maybe wasnāt so foolish, that maybe he had been the one that was foolish: And so he sacrifices himself for them, giving Lettuce a SMILE. now he smiles a bit in the series, but it is only ever either MALICIOUS or for his BROTHERS; Pai doesnāt show his emotions often, and the fact he smiled at LETTUCE is something huge.