(原曲) final phase

final phase, with an in-game title of , is a song by fripSide. Music and lyrics were by Yaginuma Satoshi.

It was added in the game BanG Dream! Girls Band Party! prior to the event in collaboration with the anime series To Aru Kagaku no Railgun T. It is playable for a limited time, from June 19, 2020 to June 30, 2020.

Lyrics
Rōmaji=

Kanji= その鼓動は時を超えて　壊れない絆信じた 守りたいと願った日々　ずっと消えない想いを抱いて

儚く眩しく優しい　その瞳がくれた気持ち 君と笑い合った時間　この胸に宿った記憶

言葉にできないほど　君を想い続けた失くした その痛みを能力(チカラ)に変えて　走り続けている

No one can stop this phase! いま一緒に　覚悟を心に刻んで 守りたいと誓ったから　この手を君と強く結ぶ 共に過ごす時間だけが　思い出の全てだったと いつか君が笑う日まで　この絆を守り貫いて

English= The heart beats over time I believed in unbreakable bonds The days I wish to protect Holding onto the feeling that won't go away

Illusory dazzling and gentle Are the feelings those eyes gave me The time I laugh with you Are the memories that live in this heart

I've been thinking about you so much That I can't put it into words I turn the pain I lost into power And I still keep on running

No one can stop this phase! Now I engraved my determination into my heart together Because I swore to protect I'll hold my hand with you The only time we spent together Were all but just memories Until one day when you laugh I'll protect our bonds together

Source: Toaru Majutsu no Index Wiki