protagonist with a face · sexual content · linear plot
DeepOne -Ryoukai Shinpan-
DeepOne-領界侵犯-
"Is that feeling a curse or love?" Read more →Collapse ↑
"Is that feeling a curse or love?"
A strange calamity known as the "Fallen Child" has appeared in Kamimizu-ryu. There are those who resist the unprecedented crises that have repeatedly befallen them, among those there are Itsukino Naoya, Hinamori Saya, Itsukino Ichika and Fujinomiya Atsushi.
They perform a "Purification Ritual" to subdue the Fallen Child, however, the "Purification Ritual" comes with a cursed "price".
"We have confirmed the Seahorse invasion. We will now subdue the breach of our territory."
With the Fallen Child looming before his very eyes, Naoya wields his "immortal power." With each battle and each defense, more losses follow. Yet, his resolve to protect his town and his comrades remains unwavering, even if it means losing something more precious than his own life.
"I won't let that happen."
A strange girl appears before Naoya, who is giving everything he's got and pushing forward towards his destiny. But the girl knows something... she has come all the way here to meet him.
"This time, I will save you." "Even if you hate me..."
The Blue Witch, Kasumi Yuuki. Meeting her will change Naoya's destiny.
[Translated and edited from (https://dlsoft.dmm.co.jp/detail/next_0449/)]
- Developer
- Nameless
- Length
- 33-41 hrs
04Tags · ordered by curator score
Consensus
-
no ratings yet
Time to finish
33-41hrs
catalog estimate
Platforms
1
win
Curator reviews
-
awaiting first review
Reading now
No one is currently logged as reading this. Be the first.
Your reading
Sign in to track your reading: status, progress, route completion, notes, pace against the median.
Sign inAvailable translations.
Sourced from VNDB. Click any release to open its VNDB page for download / patch info.
8 more releases↓
- Complete · Official · 2025-07-25DeepOne -Ryoukai Shinpan-
- Trial · Official · Free · 2025-06-13DeepOne -Ryoukai Shinpan- Trial Edition
- Trial · Official · 2023-07-27Deep One - Regular Edition
- Trial · Official · 2023-07-27Deep One - Limited Edition
- Trial · Official · 2023-07-27Deep One - Regular Edition
- Trial · Official · 2023-07-27Deep One - Limited Edition
- Trial · Official · 2023-07-27DeepOne
- Trial · Official · 2023-07-26DeepOne
03The book
The text.
15Quick facts
- Developer
- Nameless
- Publisher
- -
- Original JP
- Jul 25, 2025
- English release
- -
- Length
- 33-41 hrs
- Rating
- -
- Also known as
- DeepOne Desecration
13Synopsis
"Is that feeling a curse or love?"
A strange calamity known as the "Fallen Child" has appeared in Kamimizu-ryu. There are those who resist the unprecedented crises that have repeatedly befallen them, among those there are Itsukino Naoya, Hinamori Saya, Itsukino Ichika and Fujinomiya Atsushi.
They perform a "Purification Ritual" to subdue the Fallen Child, however, the "Purification Ritual" comes with a cursed "price".
"We have confirmed the Seahorse invasion. We will now subdue the breach of our territory."
With the Fallen Child looming before his very eyes, Naoya wields his "immortal power." With each battle and each defense, more losses follow. Yet, his resolve to protect his town and his comrades remains unwavering, even if it means losing something more precious than his own life.
"I won't let that happen."
A strange girl appears before Naoya, who is giving everything he's got and pushing forward towards his destiny. But the girl knows something... she has come all the way here to meet him.
"This time, I will save you." "Even if you hate me..."
The Blue Witch, Kasumi Yuuki. Meeting her will change Naoya's destiny.
[Translated and edited from (https://dlsoft.dmm.co.jp/detail/next_0449/)]
14Cultural moment · release cadence
- 2025
Japanese release
Original edition, shipped by the developer.
18Content advisory
- none
Sexual content
On-screen adult content flagged at the catalog level.
- none
Violence
On-screen violence flagged at the catalog level.
- none
Age rating
Not rated.
04Reviews and discussion
What readers wrote.
21Featured reviews
No reviews yet.
Be the first curator to write one. Featured reviews run 4-6 paragraphs and earn placement by reader helpfulness.
Sign in to review23Rating distribution
No ratings yet - histogram draws once at least one reader scores this title.
25Lists featuring this VN
This title hasn’t been picked up by any public list yet.
19Discussion
Threads on this VN are gated by reading progress · a thread on a specific route only opens once you’ve cleared that route. Sign in to read and post.
Sign in →05Adjacent reading
Where to go from here.
29Adjacent shelf · by tag overlap · 5 results
31Curator picks
Three curator picks with personal rationale. The pick list populates as curators publish their recommendations.
32Sponsored · publisher partner
Partner titles you might like
Yumefumi earns a commission when readers purchase from partners. Partners do not influence editorial coverage and live behind an architectural wall from the catalog.
No publisher partnerships are active yet. This block reserves its footprint so the sage wall sits in the right place when partners do light up.