Amai Daichi and Kosame in COCORO

Amai Daichi and Amai Kosame share this COCORO profile because the official bios are already a sibling story. They are not a dual heroine package. The novel is linear and centered on Cocoro. Daichi and Kosame are the childhood-circle family that makes ruined Tsukumo feel like a place people still have to live in after the Calamity.

Daichi grew up with Mitsumine Hinata and Ryuzaki Kazane. Official English copy gives him a short temper and a rebellious streak, then immediately undercuts the delinquent sketch: at heart he is serious and hardworking. His straightforwardness helps him and also lands him in trouble. He cares deeply about his younger sister. Yasuaki Takumi voices him. His header line is a warning, not a joke: “If you don’t like it here, you’re free to leave. This is our town.”

Kosame is that younger sister, currently in middle school. She lost the use of her legs in an accident during the Calamity and now uses a wheelchair. The profile calls her shy and sensitive, then notes that she acts affectionate once she opens up. She looks up to Kazane like an older sister and is also close to Hinata. Riona Imaizumi voices her. Her credited line is the opposite of Daichi’s wall: “You can trust Kazane-chan to take care of anything. She’s really incredible.”

Daichi, the shop, and the grudge

The Amai family runs a confectionary shop in the shopping district. The business is struggling. Daichi makes a living collecting scrap metal instead. That is the entire public economic picture: a cake shop that is barely a shop, and a boy picking through metal in a city that already had an AI disaster.

The personal picture is sharper. An accident during the Calamity disabled Kosame. Daichi has blamed Hinata and Hinata’s father, the former mayor, ever since, and he harbors a grudge. The official text does not reconstruct the accident. It does not assign legal fault. It does say the mayor’s son is not welcome in Daichi’s version of Tsukumo.

Read that against Hinata’s own page. Hinata’s relationship with the mayor was already strained. After the Calamity, Kizuki Kirika became his guardian and he did not stay. Daichi did stay. The scrap-metal work and the shuttered confectionary are what “staying” looks like on this street. Murakumo Kotaro can treat Tsukumo as a posting with troublesome jobs. Daichi treats it as the town he will not let a visitor bad-mouth.

This wiki will not invent a courtroom scene or a secret Calamity report to settle the grudge. If you want the conversation they actually have, play the novel. The walkthrough can tell you when hometown scenes show up without quoting them. The review is the place to argue whether Daichi is written as heat or as a person.

Riona Imaizumi (Kosame) comment

Kosame, the wheelchair, and the puppet shows

Kosame’s bio is careful in a way this page should copy. She lost the use of her legs in a Calamity accident. She uses a wheelchair. She is not written as a mascot who exists only to motivate Daichi, even though he dotes on her. She has not played much with children her own age since the accident. She still organizes puppet shows for younger children. That last detail is the one public hobby on the whole Amai sheet, and it belongs to her, not to her brother.

She looks up to Kazane and is close to Hinata, Kazane’s childhood friend. That triangle matters when you are mapping warmth in a cast that also includes a boy telling Hinata to get out. Kosame is the reason Daichi’s hostility cannot be the only Amai note in your head. She is also the reason Kazane’s “older sister” reputation is not just a tag on a status screen.

Prototype humanoid in a garden on one side of town; middle-schooler running puppet shows on the other. COCORO wants both images. If you only remember CCR-01, you have skipped the street the investigation team is walking through.

How the siblings sit in a five-hour linear novel

You do not unlock an Amai route. Steam’s product page and Frontwing’s site describe one heroine and a single-player story. Daichi and Kosame appear because Hinata came home, not because you picked them on a menu. That is why this is one article instead of two route pages.

Voice work splits the pair. Takumi has to sell a boy who is angry and also exhausted from scrap work. Imaizumi has to sell shyness that can turn affectionate without erasing the wheelchair or the lost classmates. Hinata remains unvoiced, so their lines will often land against silence. Japanese is the voiced language; English and both Chinese scripts are text.

Practical reading notes are short. Save anyway. The game is about five hours. The getting started guide handles install, demo, and language. Playtime handles session length. Endings notes are not an Amai checklist. The launch recap is the 27 August 2026 date stamp. Links holds official URLs.

Reading order for this corner of Tsukumo

If you arrived from Kazane’s page, stay here for the rest of the childhood circle, then go back to the garden. If you arrived from Hinata, read Daichi’s grudge before you decide the hometown is only nostalgic. If you arrived from Cocoro, use this page as a reminder that the Calamity has a body count and a shop district, not only a botanical rumor.

The Characters Hub remains the roster. Kirika’s investigation and Kotaro’s extermination squad are the adult half of the same disaster Daichi is still paying for. None of those pages will tell you how the accident is finally talked about. The Amai profile’s job is narrower: a brother who collects scrap, a sister who puts on puppet shows, a confectionary that cannot stay open, and a town Daichi still claims as ours.