Joji ~ Sanctuary (Lyrics)

This is a love song in which Joji is identifying his significant other as his “sanctuary”. This is due to her fulfilling his desire to “(fall) in love”. They share a mutual relationship goal, which is “sincerity”.
So basically, this track is an expression of his yearning for the two of them to be together. And he is especially fond of their nighttime interludes. Indeed Joji specifically tells his boo that when she needs some loving in the evening, he is just “one call away”.