Mighty Heart - Vol. 3 Ch. 27 - Explosive! New Weapon!

[MangaDex]

 

[ColonelCrisp]

Who designs the weapons? He/she should be fired.

 

[RonBWL]

@ColonelCrisp pretty sure we've seen the inventor since Chapter 9 :v

 

[Stalkerman]

The founder and head of the organization I think so you can’t do much about it

 

[sylvacoer]

if it works, it works

 

[einrip]

That weapon