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The Fusion Succeeds...?! (ついにできたフュージョン！！, Tsui ni Dekita Fyūjon!!; lit. "The Fusion is Completed at Last!!") is the four hundred eightieth chapter of the Dragon Ball manga.
Goten and Trunks fuse, but the first two times fail. The third time it works and Gotenks appears. He leaves Kami's Lookout for Majin Buu's house, and comes back a few minutes later beaten by Majin Buu.
|Volume 40: Hercule to the Rescue|
|Goku Meets Boo! · Super Saiyan Level 3!!! · Boo Unbound! · Goku's Time · Goku Goes Back · Where is Gohan? · The Zeta Sword · The Fusion Succeeds...?! · The Earth's Secret Weapon! · Super Fusion! · The Friends of the Djinn · The Creature of Wrath · Two Boos?!|