Mamotte Lollipop,it means Save Me Lollipop in English. It is called Mamotte lollipop because of the lollipop that is telah diberi sejak Ichii to Nina. Ichii cast a spell on the lollipop so that,even if Zero and Ichii are far away from Nina,she can still be protected sejak the lollipop. That's why Save Me Lollipop atau in Japanese Mamotte Lollipop.xD
'Mamotte' means Save me. it works because Ichii and Zero spend the entire series protecting Nina from wizards. lollipop is because Ichii compares Nina to a lollipop because they're both cute. save me as in they're protecting her, the lollipop is nina.