U-NEXT
E1The Little Soldiers Who Tie Down Gulliver / The Snowy Deep Winter Battle of Alaska I
Where to watch
Seasons & Episodes
E1
E2The Little Soldiers Who Tie Down Gulliver / The Snowy Deep Winter Battle of Alaska II
E3The Little Soldiers Who Tie Down Gulliver / The Snowy Deep Winter Battle of Alaska III
E4Tom Thumb Races Through the Oil Field / Battle to Blockade the Gibraltar I
E5Tom Thumb Races Through the Oil Field / Battle to Blockade the Gibraltar II
E6The War of the Ant and the Grasshopper / The Invasion of the Oceanian Military State I
E7The War of the Ant and the Grasshopper / The Invasion of the Oceanian Military State II
E8The War of the Ant and the Grasshopper / The Invasion of the Oceanian Military State III
E9In an Obstacle Course Race It's Normal to Get Covered in Mud / The Battle for Supremacy in Antarctica
E10Three Legged Mountain Climbing is Life and Death / The Artillery Battle in the Iguazu Mountains I
E11Three Legged Mountain Climbing is Life and Death / The Artillery Battle in the Iguazu Mountains II
E12Three Legged Mountain Climbing is Life and Death / The Artillery Battle in the Iguazu Mountains III
E13In a Cavalry Battle, Knock Down the Foothold / The All-Out War in Amazon City I
E14In a Cavalry Battle, Knock Down the Foothold / The All-Out War in Amazon City II
E15The Graveyard of Junk is a Mountain of Rare Metals / Interception at the Site of the Alaska Battle I
E16The Graveyard of Junk is a Mountain of Rare Metals / Interception at the Site of the Alaska Battle II
E17The Coal Mine Littered with Stacks of Money / The Kamchatka Peninsula Nightime Blitz I
E18The Coal Mine Littered with Stacks of Money / The Kamchatka Peninsula Nightime Blitz II
E19The Coal Mine Littered with Stacks of Money / The Kamchatka Peninsula Nightime Blitz III
E20You Can't Put a Price on Honor / The Critical Running Battle on Victoria Island I
E21You Can't Put a Price on Honor / The Critical Running Battle on Victoria Island II
E22You Can't Put a Price on Honor / The Critical Running Battle on Victoria Island III
E23A Requiem for the Flowers Blooming in the Field / The Battle to Destroy the Baby Magnum I
E24A Requiem for the Flowers Blooming in the Field / The Battle to Destroy the Baby Magnum II
Cast · Directed by Takashi Watanabe
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Heavy Object — streaming FAQ
Which OTT platform streams Heavy Object?
Heavy Object is streaming on U-NEXT in Japan. It's not currently on Netflix.
Is Heavy Object on Netflix?
No, Heavy Object is not on Netflix in Japan as of August 2026. It's currently on U-NEXT.
Is Heavy Object on Amazon Prime Video?
No, Heavy Object isn't on Amazon Prime Video in Japan right now. It's on U-NEXT instead.
Where can I watch Heavy Object for free?
Heavy Object is available on U-NEXT in Japan, but you'll need an active subscription — there's no free option right now.
How many seasons are in Heavy Object?
Heavy Object has 1 season in total (24 episodes). The series concluded in 2016.
Are all episodes of Heavy Object out yet?
Yes — all 24 episodes across 1 season of Heavy Object are out and available to stream.
Is there a Season 2 of Heavy Object?
No — Heavy Object ended after 1 season, so there is no Season 2.
What light novel is Heavy Object based on?
Heavy Object is based on Heavy Object by Kazuma Kamachi.