Agent Sirius

[後半に日本語レビューあり] [h1]A School Exploration ADV Where Corruption Cascades[/h1] Set in a high school, this exploration ADV follows a protagonist who serves as both detective club president and covert agent, pitting her against a brainwashing monster organization targeting the student body. Her "pleasure-weak" constitution is a sharply conceived irony: the one meant to protect the school is precisely the most vulnerable to its enemies — a tension that never fully lets up. Gameplay is anchored in campus exploration. The wide school map is navigated on foot, with NPC conversations and evidence-gathering driving the investigation forward. Combat is stripped down to evasion-only — dexterity takes a back seat to reading story choices and branching outcomes. What separates this from comparable corruption titles is the chain-fall design. Defeat unlocks five distinct corruption types — but the real hook is that a fallen protagonist can then turn and ensnare her own allies, placing the player on both sides of the equation. This mechanic is arguably what fueled the game's day-one all-genre top ranking on its original platform. The CG character designs are cohesive with rich expression variants …

Not for me. I can get past the Japanese obsession with high school because it's an anime trope, and set the canonically underaged out of mind when they look like adults buuuut I can't deal with characters that look underage (even if they canonically aren't). And that's the first character that disrobes. Nope nope nope.

I like it when girls get corrupted

Awesome and unique game. I'm glad to see so many good reviews but confused why so many only have 2 hours of playtime. The after story alone took me a little over 2 hours and the main game took me nearly 10 hours to beat and see everything. Loved that the ending perfectly set up a sequel as well. Definitely worth a buy and the price is more than fair even without a sale.

Developed by Lunarian and published by Saikey Studios, Agent Sirius is a narrative-focused RPG that combines detective work, supernatural mystery, and character-driven storytelling into an adventure that prioritizes investigation over traditional role-playing mechanics. Set within the seemingly peaceful Star Haven High School, the game follows Beni Akesuzu, the leader of the school's detective club who secretly serves as an operative for Bancho, an organization dedicated to confronting paranormal threats. What begins as a series of strange disappearances and unsettling rumors involving female students gradually evolves into a much larger conspiracy, drawing Beni into a dangerous conflict where the line between ordinary school life and the supernatural becomes increasingly blurred. The premise immediately establishes an intriguing atmosphere, giving players plenty of reasons to uncover the truth hidden behind the school's familiar halls. The game's greatest strength lies in its emphasis on detective gameplay. Rather than constantly pushing players into combat, Agent Sirius encourages them to explore every corner of the campus, question classmates, inspect suspicious locations, and …

It's good but to get the most out of it you got to be prepared to do a decent amount of reading. There's alot of exposition and character driven plotlines and lore and all kinds. That's great but you have to either have a great attention span or be prepared to play smaller sessions because it does get overwhelming. Alot of this dialogue is pretty funny (especially the side characters) and shows you the game doesn't take itself too seriously, which is great because if it did, it would be unplayable. Gameplay is broken down into "talk to npc" walk around "talk to npc" walk around some more....repeat until you're put into a boss fight which is basically a dodge the enemys in the area, move forward, find objective to activate. Repeat. I've only done the first two bosses at time of review but each has their own gimick and things to mix up this objective. I highly recommend NOT losing to these bosses on purpose, tho tempting it may be. The figuring out the mystery and WHO DID IT thing gets spoiled a fair bit if you lose and you find out who is who. Make saves before the conflicts (the game will warn you) and save them till after the main story is complete. Losing to the bosses is ent…