"I can feel it...share your power with me. Here we go everyone. We'll defeat Zamasu!"
When the hopes and energies of everyone is gathered like a Spirit Bomb, Trunks then absorbs the power into his body — causing his Light Sword to become far larger and more powerful with his ki embedded.
Usage and Power
While Future Trunks does not use this state in the manga version of the storyline, he does appear in it on the alternate cover for The Decisive Battle! Farewell, Trunks!.
Video Game Appearances
In Xenoverse 2 it appears as an Ultimate Skill for the Future Trunks (Dragon Ball Super) and the Future Warrior under the name Sword of Hope after the 1.07.00 Update. DBS Future Trunks' can use it in his Capsule Corp. Clothes 3 skillset which appears as part of the 1.07.00 Update and can be obtained by the Future Warrior by purchasing it from the TP Medal Shop after the update.
"Wield a large Ki sword. Attack with Weak Attack Button, Strong Attack Button, Ki Blast Button, and Jump Button, and move with Control Stick."
— Dragon Ball Xenoverse 2 Skill description
The skill acts similar to the Power Pole Pro transformation in function, though as it is an Ultimate Skill it can be used with in conjunction with Awoken Skill transformations such as Future Trunks' Super Saiyan 2 and any of the Future Warrior's transformations that do not overwrite (Purification or Become Giant) or prevent skills from being used (Power Pole Pro). However Awoken Skills must be activated before the Sword of Hope Ultimate Skill is used, as other skills become locked when it is activate. While the Sword of Hope is activated the user's ki drains causing the attack to end when the user is out of ki.
In the Warrior of Hope Saga, Future Trunks creates an even stronger version of the Sword of Hope using energy given to him by Gohan, Piccolo, Future Gohan, Teen Future Trunks, GT Trunks, GT Goku, Pan, and Xeno Trunks through the rift in timespace ironically created earlier by Goku Black's misuse of the Time Ring in conjunction with his Sickle of Sorrow. According to Elder Kai, this energy was necessary in order to kill Grotesque Zamasu who is implied to be stronger due to the Supervillain power-up he had received when he first fused. Chronoa surmises that everyone sent their energy after feeling his desire to protect the integrity of the future. However, this could not have occurred had Goku Black not created the rift through his misuse of the Time Ring which even Elder Kai notes is quite the ironic twist.
In Dragon Ball FighterZ, it is used in Future Trunks and Fused Zamasu's Dramatic Finish. The finisher is almost identical to the one from Dragon Ball Super with the only difference being Fused Zamasu not in his Corrupted form.