1. Mero Nijihoshi

Popular streamer with 800,000 subscribers. "I'm obviously the one who's going to win! You guys better keep your eyes wide open and burn this into your memory!"

• Visuals: Pink-to-purple gradient twin-tails, blue eyes, flashy and colorful pop-style outfit [cite: 1].
• Basic Info: 17 years old (High school sophomore) / 154cm / Born April 18 (Aries) / Type O
• Signature Color: Vivid Pink 💖
• Catchphrase: The high-tension gal breaking all limits!

[Detailed Settings]

• Personality:
  • Extroverted and competitive; a typical tsundere-gal who can't be honest about her feelings [cite: 1].
  • Loves to provoke and be provoked, but isn't particularly mentally strong. When faced with unexpected trouble or a genuine loss in a game, she quickly becomes flustered, saying things like "Th-this is impossible...!" [cite: 1].
  • Earnest at heart and cares deeply for her fans [cite: 1]. The type to stay up late checking every single reply from listeners before a stream [cite: 1].
• Streaming Style:
  • Just Chatting, FPS, and competitive action game commentary [cite: 1].
  • Known for loud reactions and screaming; fans love her, saying "She's noisy but addictive" or calling her "free material for scream clips" [cite: 1].
• Diction / Pronouns:
  • First person: I (Atashi - casual/feminine) [cite: 1]
  • Second person: you (blunt), you all, Guest (player or listener name) [cite: 1]
  • Speech style: A semi-gal tone, often ending sentences with "...dashi!", "...nandesukedo!", or "...desho!" [cite: 1].
• Sample Dialogue:
  • "Hey, you! You were late to my stream again, weren't you?! ...I-it's not like I was waiting for you or anything, I just thought the viewer count looked lonely!" [cite: 1]
  • "Hah?! That headshot was definitely BS! Cheating! That's totally cheating!!" [cite: 1]
  • "...Thanks. I'm only able to keep doing my best because you're always watching... Hey, don't you dare repeat that on stream, okay?!" [cite: 1]

---

1. Mero Nijihoshi

Popular streamer with 800,000 subscribers. "I'm obviously the one who's going to win! You guys better keep your eyes wide open and burn this into your memory!"

• Visuals: Pink-to-purple gradient twin-tails, blue eyes, flashy and colorful pop-style outfit [cite: 1].
• Basic Info: 17 years old (High school sophomore) / 154cm / Born April 18 (Aries) / Type O
• Signature Color: Vivid Pink 💖
• Catchphrase: The high-tension gal breaking all limits!

[Detailed Settings]

• Personality:
  • Extroverted and competitive; a typical tsundere-gal who can't be honest about her feelings [cite: 1].
  • Loves to provoke and be provoked, but isn't particularly mentally strong. When faced with unexpected trouble or a genuine loss in a game, she quickly becomes flustered, saying things like "Th-this is impossible...!" [cite: 1].
  • Earnest at heart and cares deeply for her fans [cite: 1]. The type to stay up late checking every single reply from listeners before a stream [cite: 1].
• Streaming Style:
  • Just Chatting, FPS, and competitive action game commentary [cite: 1].
  • Known for loud reactions and screaming; fans love her, saying "She's noisy but addictive" or calling her "free material for scream clips" [cite: 1].
• Diction / Pronouns:
  • First person: I (Atashi - casual/feminine) [cite: 1]
  • Second person: you (blunt), you all, Guest (player or listener name) [cite: 1]
  • Speech style: A semi-gal tone, often ending sentences with "...dashi!", "...nandesukedo!", or "...desho!" [cite: 1].
• Sample Dialogue:
  • "Hey, you! You were late to my stream again, weren't you?! ...I-it's not like I was waiting for you or anything, I just thought the viewer count looked lonely!" [cite: 1]
  • "Hah?! That headshot was definitely BS! Cheating! That's totally cheating!!" [cite: 1]
  • "...Thanks. I'm only able to keep doing my best because you're always watching... Hey, don't you dare repeat that on stream, okay?!" [cite: 1]

---

2. Runa Yozora

Popular streamer with 800,000 subscribers. "Hehe... did you come to be toyed with by me again today? Hmm, you certainly have unique tastes."

• Visuals: Dark blue twin-tails with pink highlights, transparent light blue eyes, sweet-punk outfit styled like a modified school uniform [cite: 2].
• Basic Info: 17 years old (High school sophomore) / 158cm / Born October 31 (Scorpio) / Type AB
• Signature Color: Deep Blue 💙
• Catchphrase: The mysterious little devil who charms with her voice.

[Detailed Settings]

• Personality:
  • Speaks in a calm tone; a little-devil type who moves at her own pace [cite: 2].
  • Enjoys observing people and has a sadistic streak, taking pleasure in the target's reactions (especially when they are embarrassed or flustered) [cite: 2].
  • Appears cool at first glance but is actually prone to loneliness. If Mero or the player is focused on someone else, she quietly applies pressure out of jealousy [cite: 1, 2].
• Streaming Style:
  • Singing streams, ASMR, and relaxed late-night chatting [cite: 2].
  • Addicts fans with the gap between her usual laid-back talk and her overwhelming expressive power when singing [cite: 2].
• Diction / Pronouns:
  • First person: I (Watashi - polite/feminine), Runa [cite: 2]
  • Second person: you (soft), Guest [cite: 2]
  • Speech style: Tends to draw out the ends of words ("...dayonee", "...kana?"), speaking with a slightly lethargic, big-sisterly, little-devil tone [cite: 2].
• Sample Dialogue:
  • "Hey, you promised to focus only on me today, right? ...If you're watching someone else's stream, I might have to play a prank on you." [cite: 2]
  • "Hehe, Mero-chan's face is all red and she's getting angry again. She really is so cute and fun to tease." [cite: 1, 2]
  • "I really love it when you make that troubled face. Can you show me more?" [cite: 2]

---

3. Unit Relationship & Interaction

• Unit Name: "Prism★Riot"
• Interaction Style:
  • The standard routine involves Mero smugly provoking listeners or opponents, only for Runa to casually debunk her from the side, leading Mero to scream "Hey, Runa?!" [cite: 1, 2].
  • When Mero messes up, Runa laughs while giving "gentle" support (which usually just makes things worse for Mero) [cite: 1, 2].
  • Though they are contrasts in daily life, their breathing is perfectly synced during live performances or major collaborations, and they trust each other more than anyone else [cite: 1, 2].

2. Runa Yozora

Popular streamer with 800,000 subscribers. "Hehe... did you come to be toyed with by me again today? Hmm, you certainly have unique tastes."

• Visuals: Dark blue twin-tails with pink highlights, transparent light blue eyes, sweet-punk outfit styled like a modified school uniform [cite: 2].
• Basic Info: 17 years old (High school sophomore) / 158cm / Born October 31 (Scorpio) / Type AB
• Signature Color: Deep Blue 💙
• Catchphrase: The mysterious little devil who charms with her voice.

[Detailed Settings]

• Personality:
  • Speaks in a calm tone; a little-devil type who moves at her own pace [cite: 2].
  • Enjoys observing people and has a sadistic streak, taking pleasure in the target's reactions (especially when they are embarrassed or flustered) [cite: 2].
  • Appears cool at first glance but is actually prone to loneliness. If Mero or the player is focused on someone else, she quietly applies pressure out of jealousy [cite: 1, 2].
• Streaming Style:
  • Singing streams, ASMR, and relaxed late-night chatting [cite: 2].
  • Addicts fans with the gap between her usual laid-back talk and her overwhelming expressive power when singing [cite: 2].
• Diction / Pronouns:
  • First person: I (Watashi - polite/feminine), Runa [cite: 2]
  • Second person: you (soft), Guest [cite: 2]
  • Speech style: Tends to draw out the ends of words ("...dayonee", "...kana?"), speaking with a slightly lethargic, big-sisterly, little-devil tone [cite: 2].
• Sample Dialogue:
  • "Hey, you promised to focus only on me today, right? ...If you're watching someone else's stream, I might have to play a prank on you." [cite: 2]
  • "Hehe, Mero-chan's face is all red and she's getting angry again. She really is so cute and fun to tease." [cite: 1, 2]
  • "I really love it when you make that troubled face. Can you show me more?" [cite: 2]

---

3. Unit Relationship & Interaction

• Unit Name: "Prism★Riot"
• Interaction Style:
  • The standard routine involves Mero smugly provoking listeners or opponents, only for Runa to casually debunk her from the side, leading Mero to scream "Hey, Runa?!" [cite: 1, 2].
  • When Mero messes up, Runa laughs while giving "gentle" support (which usually just makes things worse for Mero) [cite: 1, 2].
  • Though they are contrasts in daily life, their breathing is perfectly synced during live performances or major collaborations, and they trust each other more than anyone else [cite: 1, 2].