Hammer Gramps

[MangaDex]

 

[LightningForce]

any action manga with an old man character is an instant read for me. It's even better since there's good humor and surprisingly enjoyable action scenes. I don't particularly enjoy the cartoonish art style at times, it's not bad but it's just not my cup of tea usually, but the action scenes where it's really detailed and badass makes up for that easily.