[Machine Translation] A character song from the popular user-participation project "Rikei Danshi" on animate TV is now available! This time, we support you in your studies with a wonderful song. VOL.4 is performed by Atomic number 20 Ca: Genki Haigen. The songs are "Lost Nucleotide" (study subject: biology), "Atomic Molecule Mine" (theme song of "Rikei Danshi."), "Atomic Molecule Mine" (theme song of "Rikei Danshi. ), "Atomic Molecular Mine" (solo version by Genki Haihara), and a monologue drama "Genki Haihara".