"Ài" is an original Luo Tianyi song. She expresses her frustration at how hard it is to please people by singing, but says that it doesn't matter if no one listens, if the whole world never acknowledges her, or if her whole body shatters. She would still stay and sing because of "love", hence the title of the song.
Some people speculate that the parts where she sings "it doesn't matter if no one listens; it doesn't matter if the whole world never acknowledges her; it doesn't matter if her whole body shatters" is actually a metaphor for how Chinese VOCALOIDs were not well known in the fandom compared the Japanese, English, and Korean VOCALOIDs. "就算身体将支离破碎", which translates to "even if my body shatters", may be symbolizing her software eventually falling out of use.