Sister Other Paranoia Characters
Named cast notes for the writer, his sister, and the people whose thoughts become weapons.
How to read this cast page
Sister Other Paranoia now has a public named circle. Wikipedia, the Japanese wiki, and launch reviews agree on the siblings and several supporting roles. NookGaming counts eight main characters including Hasuya and Sahana; five of those lives are explored through the motif scenarios on Routes. This page lists what is safe to know before a first run and refuses unmarked death tables.
If a detail is only a comment-section nickname, it stays out. After you finish, the Walkthrough can tell you which late prompt names Igusa. Until then, treat supporting people as social pressure with faces—not as a spoiler roster of victims.
Hasuya (蓮也)
Hasuya is an up-and-coming light novel writer and a literature student who cannot stop hearing the ugly layer of other people’s thoughts. Official copy and reviews describe a man who shut himself away after a high-school incident taught him how potent influence-through-mind-reading could be. In the present he still keeps a few peer relationships, but he trusts almost no one. A newcomer award for a novel written in isolation does not save him; it surrounds him with jealousy and envy he can read in high definition.
His interior voice is blunt, self-loathing, and often metafictional about light-novel clichés. Critics note that the monologue can overbear the external plot. That is characterization, not a bug report. Mind-reading turns acquaintances into open wounds and, when rage spikes, into targets. The marketed fantasy—strike the insecurity they never want seen—is his toolkit. Systems language: Mind Reading.
Sahana (沙華)
Sahana is Hasuya’s younger sister, the marketing face of the game, and the only person he treats as real comfort. Public materials call her gifted yet lonely. She has withdrawn from school under her own social anxiety. Reviews add that she is also extremely sensitive to other people’s thoughts, which lets her sit with Hasuya after bad days and ask leading questions without always handing him a conclusion.
Official lines in trailers—“Onii-chan, you really are a lonely person,” love tangled with doubt—signal intimacy that is dependent and narratively dangerous. Critics are split on whether the sibling bond is felt or merely declared. NookGaming and CrazyGameCommunity both worry she can read as a device. That debate is part of reception, not a reason to invent a secret sister route. Comfort check: Content Warnings.
The True ending interaction described on the walkthrough involves her image on the title screen. This page will not describe what that ending shows.
Igusa (伊草)
Igusa is Hasuya’s only long-running friend from school days. After Hasuya’s debut success, Igusa develops an inferiority complex and a visible hurry to catch up as a writer. Game*Spark’s hands-on singled him out: you can read the jealousy, and you can also watch Hasuya “treat” him with generosity that functions as a hierarchy. If you have ever felt a friendship turn into a silent scoreboard, the scenario is built to make you recognize both sides.
The Walkthrough attaches one ending-critical prompt to Igusa in the Caterpillar scenario’s last chapter. This characters page stops at the relationship, not the line.
Tenjiku Botan (天竺 牡丹)
Tenjiku Botan is a college student in an otaku club who contacts Hasuya after his debut. She runs a moderately popular social account about obscure novels and cult films. In a story about envy and performative taste, a person who curates “difficult” media for an audience is not a random extra. She is one of the ways the outside world enters the closed room—through DMs, club talk, and the petty politics of being seen liking the right unloved things.
This wiki will not invent her route title or a romance flag. She belongs to the five-scenario circle as a named social pressure, not as a dating-sim heroine.
Hiyakawa (冷川)
Hiyakawa is a senior in the literature club, a philosophy student, and an aspiring writer who criticizes Hasuya’s work while resenting his success. He is the academic mirror: someone who believes he understands literature better and cannot stand that the market—and the award—disagreed. Hasuya’s mind-reading makes that resentment audible. Whether the “thoughts” are accurate or paranoid is one of the game’s formal tricks; Game*Spark noted that the protagonist’s distrust may color what you are allowed to read.
Everyone else in the eight
Reviews say eight mains. The five names above plus the siblings account for the public encyclopedia layer. The remaining figures live inside the Bat, Monkey, Ring, and Fox scenarios as people whose relationships with Hasuya end across four chapters each. We will not pad this page with guessed given names. When a later official artbook or HazeDenki post locks those names, this article should grow. Until then, under-specify.
Relationships to watch
- Hasuya and Sahana — mutual survival that also traps
- Hasuya and Igusa — friendship as invisible ranking
- Hasuya and the club / online circle — award visibility as injury
- Mind-reader versus target — a power fantasy the text interrogates
- Writer identity versus self-loathing — creation that does not redeem the creator
Unsafe lenses we still avoid on this page: unmarked “who dies” tables, shipping charts beyond official codependency framing, and alignment grids that pretend every motif is a dating route.
Presentation is part of character
Ohisashiburi’s CGs, Maruino’s UI borders, Aiobahn +81’s character-colored tracks, and the eye-motif choice system all speak before a nameplate does. Right-click hide-text is a character tool: sometimes the face is the whole sentence. Credits: Staff. Music: Soundtrack.
Related reading
The cast of Sister Other Paranoia is small on purpose. A mind-reading writer, a lonely sister, and a handful of people whose thoughts become unforgivable. Anything beyond that belongs in your playthrough, not in a fake encyclopedia.
Frequently Asked Questions
Quick answers to the most common questions.
Who are the main characters in Sister Other Paranoia?
Hasuya (蓮也), the mind-reading light novel writer, and Sahana (沙華), his sister, sit at the center. Supporting names include Igusa, Tenjiku Botan, and Hiyakawa. Reviews count eight mains.
Is Sahana a romance heroine?
Official materials frame an unhealthy sibling codependency, not a conventional dating route. This page will not invent unlockable romance flags.
Will this page spoil character deaths?
No. It acknowledges that mind-reading can drive people to suicide as a premise, without listing victims or scenes.
Where do the five motifs fit?
Each scenario spends four chapters ending Hasuya’s relationship with particular people. See Routes for the board; see Walkthrough for ending gates.