上弦の月 (Jougen no Tsuki)

Background
"First Quarter Moon" is told from Kaito's point of view as he expresses his love for an unspecified character and claims that he would even "walk through a rainstorm" for them.

This song first appeared in the musical adaptation of Senbonzakura.

It was later featured on Kurousa's 5th ANNIVERSARY BEST album. The song is also a part of Yamaha's Yoen Waso Emaki compilation CD and the compilation album V Love 25 -Hearts-.

This song has entered the Hall of Legend on August 30th 2018.