Figure | Sakamoto Days | Natsuki Seba | Banpresto Vibration Stars

Natsuki Seba was an employee of Okutabi Lab, and he was the latest and most successful test subject in the anime Sakamoto Days. Natsuki has the ability to create high grade gadgets and weapons since his childhood. He may be carefree at times but when it comes to an important mission he will be calm and try not to show any emotion.

Sakamoto Days
Taro Sakamoto was the ultimate assassin, feared by villains and admired by hitmen. But one day...he fell in love! Retirement, marriage, fatherhood and then... Sakamoto gained weight!The chubby guy who runs the neighborhood store is actually a former legendary hitman! Can he protect his family from danger? Get ready to experience a new kind of action comedy series!
(from Fandom Sakamoto Days Wiki)