Character sheet for Sakamoto Days. Warning. Spoilers may be unmarked, read with caution.
- The Ace: Was regarded as one of the best assassins to ever exist. Even after several years in retirement, he doesn't appear that to have lost his step.
- Acrofatic: Despite his increased weight, he is still extremely fast and deadly.
- Almighty Janitor: Sakamoto might be just a plump, middle-aged store owner, but he's the best at what he does.
- Ambiguous Disorder: He didn't know why Aoi was upset at his job as a hitman.
- Beware the Nice Ones: Sakamoto is a real mellow fellow but endanger his family as Mr. Boiled apparently did - and you'll be sorry.
- Big Eater: Reason why he can gain his weight as easily when he loses it.
- Dented Iron: Despite how powerful he appears, five years of his slow life has severely reduced his overall strength. He is noted to be currently only 30% as strong as he was before.
- The Dreaded: Sakamoto is this in the underworld. Even though he has been retired for five years they still think he is a serious threat.
- Friend to All Children: He gets along with kids very well, even getting a girl who didn't want to eat her vegetables to enjoy them.
- Game Face: Sakamoto somehow manages to become fit and thin when he decides to take things seriously.
- Hair-Trigger Temper: Mixed. His reaction to annoyances is to think Murder Is the Best Solution, however, he is able to restrain himself enough to not actually act on it. Shin is unlucky enough to be able to read his mind as he is usually the victim of this thought process.
- Hollywood Autism: Implied. As he had no idea why Aoi was upset with his job as an assassin. It took her jumping off a high wall, knowing he would save her, to make him realize how he would feel terrible if she were to die.
- Let's Get Dangerous!: Downplayed. Though still plenty dangerous even when he's fat, once he's burned his fat off temporarily, he will hit hard.
- Love at First Sight: Fell completely in love with Aoi after their first meeting.
- Offhand Backhand: Does this to the janitor assassin, able to grab the pen out of the assassin's pocket and strike him in a non-lethal way all without looking behind him.
- Overprotective Dad: When Shin suggests that when his daughter grows up guys will start hitting on her, Taro shoots the hypothetical guy in his imagination. Then becomes a Brick Joke when at the end of said chapter a young boy asks her to be his girlfriend and he goes home to get his gun.
- Papa Wolf: See Beware the Nice Ones.
- Retired Monster: He was never a "monster", he just saw what he did as a job and didn't even recognize there was a problem with it until Aoi pointed it out. He is retired though.
- Shoot the Bullet: He does this with a cough drop.
- Ugly Guy, Hot Wife: Normally, this is Played Straight, where's he's chubby and goofy-looking compared to his wife. However, once he burns through his fat, this trope is Subverted until he gains it back the next day.
- The Voiceless: While not completely voiceless, Sakamoto is usually pretty terse and he can go whole chapters without uttering a word. He mostly communicates with Shin (who can read minds) via thought bubbles. In one chapter Lu and Shin found it odd on how talkative Sakamoto was that day, only to find out he was an imposter.
Convenience Store Employees
- Ascended Fanboy: Not in the way he imagined. He was a fanboy of Sakamoto but now works for him... as a Convenience store clerk.
- Combat Clairvoyance: He is able to read the minds of people nearby and adapt his skills accordingly.
- Fan Boy: He is one for Sakamoto, and still finding him to be so cool even after letting himself go. He was even willing to kill himself as a replacement death for the Hitman Association for the crime of aiming his gun at his hero.
- Worf Had the Flu: One would think having the ability to read minds would be useful, but quite often it seems to be a disability. If someone is too simple minded he can only vaguely read what they are thinking, if they are too analytical in their thinking it causes him to be overloaded, and if the person is completely focused on their task he just hears them repeating the action over and over.
- Anime Chinese Girl: Fits the bill on her first appearance, to the point that Shin calls her just "China". She drops this after Sakamoto employs her.
- Drunken Master: Her fighting style requires her to drink medicine first
- Girls Are Really Scared of Horror Movies: Played with. She asks if she can look away if an R-rated movie (they're watching for research)gets scary, but turns out to be okay when it's just gore.
- Mafia Princess: Lu is a Triads and Tongs version of this trope.
- No Poker Face: During a game of High Stakes Old Maid, she is a bawling mess indicating to everyone she has the Old Maid.
- Undiscriminating Addict: To activate her Drunken Master abilities, Lu once drank from a bottle of pure ethanol meant as a disinfectant (but apparently not denatured). She was inspired by how her grandfather would run out of booze on and drink alcohol meant for lamp fuel.
- Crippling Overspecialization: He was fired from the association because, even though he is a skilled marksman, it was the only thing he was good at.
- The Ditz: While not overly dumb, he is simple minded. So much so that anytime Shin tries to read his mind, his thoughts are represented as crude drawings that Shin can barely make sense of.
- Friendly Sniper
- Non-Human Sidekick: He has a pet bird named Piisuke that acts as his spotter.
- Pinball Projectile: Uses special bullets designed to ricochet, letting him hit targets hiding behind cover.
The Order:An elite squad of killers charged with maintaining order in the assassin world.
- Asskicking Equals Authority: Only the best of assassins can be part of them.