Peko Pekoyama

After the first motive was first introduced, if Hajime handed Mahiru a certain magazine, she would invite Peko to a girls-only gathering bonus scene to break off the tension. She could be seen enjoying making desserts with the girls, commenting that this sort of activity wasn't so bad once in a while. Peko also agreed to attend the all-night party at the old building, hosted by the group's leader, the Ultimate Imposter. She didn't realize until the class trial that the party was thrown by the Imposter to save her and the others from someone who planned to kickstart the Killing Game, and that was no other than Nagito.

At this stage of the killing game, Peko only communicated with her young master in secret. She would discreetly check on him each morning to reassure the others at the daily meeting that he was still alive and well, despite his refusal to participate in the meetings.

When he threatened the group, claiming he had the potential to kill others, Peko's first instinct was to calm him down. If necessary, she was prepared to take matters into her own hands. She was also the one who passed along the party details to Fuyuhiko. He was initially not pleased with the idea, but later tried to join, only to backtrack when Chiaki discovered his true intention.

At the party, Peko volunteered to guard the duralumin case full of items confiscated by the Ultimate Imposter. Nagito then suggested her to guard the case in the office, as the circuit breaker was also located there. Unbeknownst to her, this was done to prevent Peko from entering the storage room and discovering the irons he had used to cause the blackout. Peko complied, bringing the case and a plate of food to the office, intending to remain there for the duration of the party. However, she was forced to leave the office to use the bathroom when she was struck by inexplicable stomach cramps before the party even started.

Peko is a tall, young woman with a fairly thin but athletic frame. She has fair skin and a cool demeanor. She has long silver hair tied up into two braids on each side of her head, secured by white ribbons at the bases and dark red hair ties at the ends. She has side-swept bangs with two shoulder-length locks of hair that curl outwards, left down to frame her face. Her eyes are a vivid red, and she wears thin-framed rectangular glasses.

She wears a long sleeved, turquoise-black seifuku uniform with a dark, gray-teal sailor collar and sleeve cuffs, each striped with two thin white lines at the edges, a red ascot tied at her neck. A red strip of cloth is wrapped around her left upper arm. Below this, she wears a somewhat paler turquoise pleated skirt, striped with an even paler line at the hem. Her legwear consists of turquoise-black tights and cream-colored loafers.

Peko is constantly seen carrying her shinai (bamboo sword) around with her in a dark turquoise sheath/wrap with a thin white dragon design printed on the back. The shinai has a metal katana blade hidden at the center of its bamboo wrappings. She has wide hips, an extremely plump and soft rear, as well as thick, squishy thighs that match her buttocks.

Peko has a serious demeanor, showing little emotion. Because of this, her stoic and composed nature often comes across as intimidating. Her presence is made more severe by her willingness to use force to maintain order and prevent unnecessary fighting This is combined with her awareness that her swordsman instincts might cause her to attack reflexively at anything she senses as a threat, and thanks to her talent, even a misaimed attack could turn deadly.While capable of violence, Peko herself states that she prefers to avoid senseless killing, though there are times when swords must be drawn—whether she wants it or not

In reality, Peko is a rather socially awkward individual. Many cases involve her scaring her conversation partners due to her intense stares and status as a woman of few words. Other cases exemplify how easy it is to get her flustered through compliments or retellings of her embarrassing moments.

She is neither impolite nor antisocial, however, as she actively makes an effort to interact with the group. She may do so in compliance with Fuyuhiko's order to get along with her classmates, but it is shown that she genuinely cares for them, proven more by her actions than words. She helps cut coconuts for her friends without being asked and already feels satisfied by watching them enjoy her fruit of labor. Whenever a fight or quarrel breaks out, or when Hiyoko makes insulting remarks and harsh judgments, Peko isn't afraid to step in and demand that they stop.

Due to her food being spike Peko has even worse flatulence. Her farts are very loud and wet,always feeling bloated and full of gas. As such, she has little control in when she'll let one rip. The farts tend to escape her without her being able to do much about it. Her farts are very loud and bubbly.