The characters of the manga series Hyakuen!!:
A "spendthrift" who is initially saving up 10,000 yen for a scooter, Momo is roommates with Madoka and constantly changes her dream goal. She's cheerful, quite ditsy, and is prone to completely miss the point in conversations.
- Heterosexual Life-Partners: With Madoka.
- Red Oni: To Madoka's Blue Oni.
Momo's roommate and an "economist," Madoka is also saving up money for her dream — saving 1,000,000 yen in order to go see her grandfather in Germany. Stoic and a Deadpan Snarker, Madoka is Momo's Foil. She has an arranged fiancé Kazuma, who she refuses to recognize.
- Arranged Marriage: With Kazuma.
- Blue Oni: To Momo's Red Oni.
- He Is Not My Fiancé: Towards Kazuma, though she's gradually warming up to him.
- Heterosexual Life-Partners: With Momo.
- Tsundere: Towards Momo (and later Kazuma).
A mutual classmate and friend of Momo and Madoka.
- Girlish Pigtails: Sports a short pair of pigtails, so they resemble odango.
- Satellite Character: She's just... there, really.
Madoka's childhood friend and rival, Chouko will often boast about her new purchases in front of Momo and Madoka and acts like a a mix between an Ojou and a Rich Bitch, but she really earns all the money she uses through a variety of part-time jobs.
- Hidden Depths: Though she acts like a jerk flaunting all her purchases, she really spend a lot of hard time and effort to afford all the things she wanted.
- Hopeless Suitor: Develops a big crush on Touya.
- Jerk with a Heart of Gold: Tries to cheer up Kyouka in Chapter 10 when she's nervous about the public bath.
- My Friends... and Zoidberg: Chouko inverts this. She's often counted as a part of the group and will be offended by it. Played straight whenever she's ignored.
Momo: Chise... Kyouka...
[Chouko passes by]
Momo: Chou-san...
Chouko: Eh?
Momo: That being said, I've gathered everyone!
Chouko: Hey! Why'd you go and drag me in this as well!!?
- Rich Bitch: Acts like this, but it's indicated that Chouko has taken a few part-time jobs to get the money to buy the things she wants.
- The Rival: But she's really an Unknown Rival.
- Smitten Teenage Girl: Towards Touya.
The sweet and sheltered but lonely daughter of a financial group leader, Kyouka is naive towards the customs of those beneath her. People treat her like an Ojou in a respectful but distant manner, leading to Kyouka's strong desire to make friends.
- Fish out of Water: Towards "commerner" and "poor" life.
- Ojou: Treated like this.
Madoka's arranged fiancé. In spite of Madoka's insistence on not recognizing him as her husband-to-be, Kazuma goes through great lengths to impress her, though his Played for Laughs methods tend to dip into Stalker with a Crush territory.
- Arranged Marriage: With Madoka. To him, it's a Perfectly Arranged Marriage.
- Crouching Moron, Hidden Badass: Subverted. He tries, though.
- Declaration of Protection: He's not quite good at it, but he's well-intentioned. He even combined their balconies in case of emergencies.
- Hidden Depths: In spite of his appearance and attitude, Kazuma wasn't rich to begin with. As a child, Kazuma's family was poor and his homelessness was often teased by bullies.
- Opposites Attract: Is attracted to The Stoic Deadpan Snarker Madoka.
- Red Oni: To Touya's Blue Oni.
- Rescue Romance: As kids, Madoka defended a then homeless Kazuma from bullying, which led to him falling in love with her.
- Sixth Ranger: Shared with Touya. He also qualifies for the Plucky Comic Relief.
- Smitten Teenage Girl: A gender-flipped example.
- Stalker with a Crush: Lampshaded by their class when he mentions transferring to Madoka's class to find her, spending a month looking for her, and spending three hours looking at the mirrors merely because he get to see her.
- Throw the Dog a Bone: Madoka slowly starts to warm up to Kazuma... only for Kazuma to get hilariously arrested, getting mistaken for the porn neighbor.
The Stoic and Servile Snarker assistant of Kazuma's. He is often prone to nosebleed around Momo.
- BlueOni: To Kazuma's Red Oni.
- Heterosexual Life-Partners: With Kazuma.
- Hidden Depths: In spite of his stoic-like nature, Touya has little contact with girls, which explains his constant nosebleeds around
- Male Gaze: Which leads to...
- Nosebleed: Does this frequently around an exposed Momo.
- Oblivious to Love: Is oblivious towards Chouko's feelings for him.
- Odd Friendship: With Kazuma and Momo.
- Sixth Ranger: Shared with Kazuma. He also qualifies for The Smart Guy and The Big Guy.
