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Sickly Days and Summer Traces

Sickly Days and Summer Traces

A devoted brother and his fragile sister share a quiet, dreamlike summer. As her gentle companion, speak with her, care for her, and gather the fleeting, precious fragments of a love that blooms softly in the stillness of everyday life.

Released Jun 20, 2025 Developer Sister Position Publisher HIKARI SPARK Platforms Windows Sexual ContentHentaiCasualNudityFPS
View on Steam ↗ $11.99 (US · as of 2026-09-26)

What players say

Steam review score and the most-helpful voices, which may include critical ones. Score via Steam as of 2026-09-25.

94.6%positive2,166 reviews
Recommended · 2 found this helpful

“Incest”

— a player, Steam review · 26 hrs played
Recommended · 1 found this helpful

“It's the goat game, i don't feel regret buying it. Good gameplay, goated arts, lovely girl, etc... Literally wholesome story, you must try!!”

— a player, Steam review · 2 hrs played
Recommended · 2 found this helpful

“Absolute banger! Easy top 5 imouto no diff. I love the slow and whispering talk, and I really appreciate every single task you do is a event with your sister, it keep the pacing of the story. Unlike other games where you do task like a chore just to reach the number and unlock…”

— a player, Steam review · 11 hrs played
Read more reviews ↗

Player activity

Monthly average concurrent players. Live data self-collected from the Steam API · history through 2026-08 via SteamCharts.

614all-time peak
0 50 100 2026 85 avg · Jul 2025

Achievement stats

Global completion rates across all Steam players — a data view of how far people actually get. Source: Steam official stats · as of 2026-09-26.

42achievements
58.5%median completion
28.8%rarest: The Eternal Cicada
94.8% of players 89.7% of players 84.4% of players 84.2% of players 83.7% of players 78.6% of players 77.5% of players 77.5% of players 76.4% of players 72.2% of players 72.0% of players 70.2% of players 68.0% of players 66.7% of players 66.2% of players 66.0% of players 65.2% of players 64.8% of players 64.4% of players 62.8% of players 62.3% of players 58.5% of players 56.4% of players 52.8% of players 51.9% of players 51.4% of players 50.9% of players 50.6% of players 50.0% of players 49.2% of players 47.9% of players 44.6% of players 44.3% of players 43.9% of players 43.6% of players 41.2% of players 40.2% of players 39.0% of players 38.7% of players 37.9% of players 37.4% of players 28.8% of players 94.8% 0% most earned rarest
Almost everyone has
94.8%Big Brother, Long Time No See! — Start the game
89.7%Utopia — Complete the prologue
84.4%Invisible Hand — Enter game settings
Rarest badges of honor
28.8%The Eternal Cicada — Jump in the history interface
37.4%A Dangerous Day — Complete 'A Step Away from Daily Life'
37.9%'Siblings' — Complete 'Mom's Memories'

Price tracking

US-region pricing (USD), sampled twice daily by our own tracker since 2026-09-26. Steam prices vary by region — always confirm your local price on Steam.

$11.99−40% right nowcurrent · sampled 2026-09-26 21:12 UTC
$19.99base price
$11.99lowest since tracking began2026-09-26
US11.99 USD−40%
EU11.70 EUR−40%
UK10.05 GBP−40%
Australia17.70 AUD−40%
Canada15.59 CAD−40%
Japan1,980 JPY−40%
Brazil35.99 BRL−40%
China40.80 CNY−40%

Regional prices at last sample, in local currency — Steam sets each region's price independently.

China≈$6.1 Brazil Canada US Australia Japan UK EU≈$13

Cheapest → most expensive, converted to USD at ECB reference rates (2026-09-25). Relative comparison only.

Latest official news

Developer announcements via the Steam news API — links go to the original posts. More across all games on the news hub.

Jun 27, 2026
Append 5 content has been added!

Append 5 content has been added! Please obtain the new content from the source!

Mar 27, 2026
Append 3+4 content has been added!

Append 3+4 content has been added! Please obtain the new content from the source!

Nov 07, 2025
Append 2 content has been added!

Append 2 content has been added! Please update your Steam version to the latest build and obtain the new content from the source!

Screenshots

Official Steam store screenshots — click any shot to enlarge.

Facts & details

From the Steam store record, snapshot 2026-09-25.

GenresCasual
Player tagsSexual Content · Hentai · Casual · Nudity · FPS · Visual Novel · Anime · Cute · Adventure · Singleplayer · Emotional · Dating Sim (Steam store community voting)
FeaturesSingle-player · Steam Achievements · Steam Trading Cards · Steam Cloud · Family Sharing
LanguagesJapanese * , Simplified Chinese, English, Traditional Chinese, Korean *
Achievements42
Minimum system requirements (PC)

Minimum: Requires a 64-bit processor and operating system OS: Windows 10 or newer Processor: 1.5 GHz Memory: 4 GB RAM Graphics: 512M DirectX: Version 9.0c Storage: 4 GB available space Sound Card: PCM