There is a high-dimensional creature in the void outside of the multiverse. By chance, he found the multiverse in the three-dimensional space. He was attracted by the various parallel universes. Then he observed and recorded the multiverse. The creature established his lab in the void--【Misery Abyss】 and named himself 【Observer!Gaster】 (ALL of this created by Cage of Abyss and MC-Hooray)

Ending Time Octet (Full OST+UST)

【Ending Time Octet】(Phase 2)Octuple The Hatred

Original: https://www.bilibili.com/video/BV18G411T7FL?vd_source=4a80ab65efa6118e86fddc7e7511feab

【Ending Time Octet】??? OST - 001 The Wonderful Reverse

Original: https://www.bilibili.com/video/BV1dg411p7PV?vd_source=4a80ab65efa6118e86fddc7e7511feab

【Ending Time Octet】Phase 1 OST - 003 Timeline Intersection

Original: https://www.bilibili.com/video/BV15o4y1P7vh?vd_source=4a80ab65efa6118e86fddc7e7511feab

【Ending Time Octet】Phase 1.5 OST - 005 But They'll Refuse

Original: https://www.bilibili.com/video/BV1Tx4y1v7RW?vd_source=4a80ab65efa6118e86fddc7e7511feab

【Ending Time Octet】Phase 3 - Killer OST - 008 Boomeranged

Original: https://www.bilibili.com/video/BV1nw4m117Pu?vd_source=4a80ab65efa6118e86fddc7e7511feab

【Ending Time Octet】Phase 3 - UKB OST - 010 Karma Source

Original: https://www.bilibili.com/video/BV1z9Whe6Ezu?vd_source=4a80ab65efa6118e86fddc7e7511feab

【Ending Time Octet】Phase 3 - ULB OST - 012 The Genocide Ends

Original: https://www.bilibili.com/video/BV1rH4y1Y7AY?vd_source=4a80ab65efa6118e86fddc7e7511feab

【Ending Time Octet】Phase 3 - AGEM OST - 013 Fistoflatning

Original: https://www.bilibili.com/video/BV1vEW6exE26?vd_source=4a80ab65efa6118e86fddc7e7511feab

【Ending Time Octet】Phase 3 - Insanity OST - 014 Insanity Increases II

Original: https://www.bilibili.com/video/BV13hsteXEkS?vd_source=4a80ab65efa6118e86fddc7e7511feab

【Ending Time Octet】Phase 2.5 OST - 007 No Cheating! II

Original: https://www.bilibili.com/video/BV1dXHGerEck?vd_source=4a80ab65efa6118e86fddc7e7511feab

【Ending Time Octet】Phase 3 - COTV OST - 009 Untitled Composition I

Karmatic Time Trio by DJ Skel (oldest version)
Murder Time Trio by Touken Kamui/ToukenKamui
Chaotic Time Trio by Team Chaotic
Former time trio ‪Redrum3200‬ 
Ending Time Octet/Cage of the Abyss by ‪CageOfAbyss‬ & Team Coa

Original Song: Octuplet the Hatred ETO Phase 2 Remix https://youtu.be/i0cBw7_-Hdg?si=9sKDFBQv9I1giM-b

Upload of this song: https://youtu.be/4VUdTx42_Vc?si=cjk8pImWMc2qNh-h

NOTHING HERE BELONGS TO ME

【Ending Time Octet】- Phase 2 Bloodily Sinking (UST-006)

After phase 2, Chara(1980) and Sanses were exhausted. Chara(1980) only could attack one of the sanses. Others would teleport to seek assistance(To the simulated AUs). Sans who has been attacked has no strength to teleport， staying here to procrastinate.
Because of Gaster, attacking COTV was useless. COTV would extract Chara’s determination to revive HM. For COTV, HM devoted his life to blocking one hit. (OST-009)

【Ending Time Octet】Phase 3 - COTV OST - 009 Void Echoes II

After phase 2, Chara(1980) and sanses were exhausted. Chara(1980) only could attack one of sanses. Others would teleport to seek assistance(To the simulated AUs).Sans who has been attacked have no strength to teleport，staying here to procrastinate.
Since Murder!Sans had committed genocides, they achieved high HP, while Chara got debuffed and tired out, being unable to get through Murder's HP in one hit.

【Ending Time Octet】Phase 3 - Murder OST - 011 Scarlet Storm III

Discord - discord.com/invite/wZqFvRnUX6
SoundCloud - @coa-89206987
Bilibili - space.bilibili.com/519652772
Gamejolt - gamejolt.com/games/CageofAbyss

【Ending Time Octet】Phase 2 OST - 006 Bloodily Sinking

Ending Time Octet UST_ 009 [Phase3] - Gunpowder Surge (Season 1)

【Ending Time Octet】Phase 3-Insanity OST-014 Insanity Increases III (by cage of abyss on youtube)

[Fixed/Ending Time Octet] Phase 3-Insanity OST-014 Insanity Increases III [NOT MINE]

dud.

https://youtube.com/@thedud_0?si=GJpkn1NA5soqpvE5