This scene is from Episode 4 Season 2.
Lyrics:
Basara ni mau hinoki butai
Negai ichizu ga ryuugi
Ita ni tsuita sono nirami wa
Oomukou wo unarasu
Ikina ikizama sama ni naru
Maketa ka nee na
Ike sukanai hodo mabayui
Koyoi wo terasu tachi sugata
Kassai no hana michi wo
Kake nukete appare!
Tamashii wo kata dotte
Itami mo yuuki no wadachi ni
Ashita e no hana kiwame
Hon iki de ganbare!
Bandai no yo no hate de
Omoi wa itsu demo hitamichi
Mise tsukeru ne wagamono gao
Yaru janee ka joutou
Demo hontou wa yasashii shoune
Atsuki manako nigoranai
Kokora de hitotsu happa demo kakeru to suru ka
Senryou yakusha koko ni ari!
Kenran gouka yumegatari
Senpuu wo maki okoshi
Mi e kireba attou!
Debana kara hiki tsukete
Migaita ohako mise tokoro
Kui hitotsu nokosazu ni
Nari kitte joudeki!
Tao rarenu ketsui nara
Seishun kaidou oodzume
Kono mune no setsu getsuka
Azayaka ni saki hokore
Kogareteta ano hi kara
Tsumuida gei no ito wa
Hikari
Matoi nagara
Kabuite Go All Out!!
Kassai no hana michi wo
Kake nukete appare!
Tamashii wo kata dotte
Itami mo yuuki no wadachi ni
Ashita e no hana kiwame
Hon iki de ganbare!
Bandai no yo no hate de
Omoi wa itsu demo hitamichi
Source: Starmyu wikia