<p>I imagine the most significant of your mentioned connections is that they are created by the same developer - <strong>Success</strong>.</p>

<p>Having similar themes and a similar art style is definitely enough to warrant the title of <em>sister</em> games.</p>

<p>As a Western example, Bastion and Transistor are also sister games - They share no common story, but are similar in artistic style, development company, musician and artist.</p>

<p>The term <em>sister</em> in sister-game is broad and stems from sister cities &amp; sister companies. The latter of which shares no more than the same parent company. Sister cities are broad, officially approved, long-term partnerships between two communities - but they do not have to be culturally alike or share many traits.</p>

<p>The requirements for shows to have an implicit connection is low, and can be justified by being in the same broad universe, parallel universe, etc. It's mainly a production choice.</p>

CC BY-SA 3.0
2014-10-16T08:58:41.920Z
2014-11-07T13:32:35.997Z
2014-11-07T13:32:35.997Z
Toshinou Kyouko
<p>According to VNDB (for both <a href="http://vndb.org/v710" rel="nofollow">Aoishiro</a> and <a href="http://vndb.org/v98" rel="nofollow">Akai Ito</a>) and the Manga Updates page for <a href="https://www.mangaupdates.com/series.html?id=20501" rel="nofollow">Aoishiro - Kaeishou</a>, Akai Ito is the sister game to Aoishiro.</p>

<p>From what I can tell, they are both Shoujo Ai/Yuri titles, both done by Success and both seem to focus on Oni. However I can't see how those elements would make Aoishiro and Akai Ito sister games.</p>

<p>So I am wondering, is there some sort of connection between the 2?</p>

<aoishiro><akai-ito>
How is Akai Ito the sister game to Aoishiro?
# How is Akai Ito the sister game to Aoishiro?
Posted by: username_0 on 2014-10-16
According to VNDB (for both [Aoishiro](http://vndb.org/v710) and [Akai Ito](http://vndb.org/v98)) and the Manga Updates page for [Aoishiro - Kaeishou](https://www.mangaupdates.com/series.html?id=20501), Akai Ito is the sister game to Aoishiro.

From what I can tell, they are both Shoujo Ai/Yuri titles, both done by Success and both seem to focus on Oni. However I can't see how those elements would make Aoishiro and Akai Ito sister games.

So I am wondering, is there some sort of connection between the 2?
**Tags:** aoishiro akai-ito
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## 1 answers
### Answer by username_1 on 2014-10-16. Score: 1 | Accepted answer
I imagine the most significant of your mentioned connections is that they are created by the same developer - **Success**.

Having similar themes and a similar art style is definitely enough to warrant the title of *sister* games.

As a Western example, Bastion and Transistor are also sister games - They share no common story, but are similar in artistic style, development company, musician and artist.

The term *sister* in sister-game is broad and stems from sister cities & sister companies. The latter of which shares no more than the same parent company. Sister cities are broad, officially approved, long-term partnerships between two communities - but they do not have to be culturally alike or share many traits.

The requirements for shows to have an implicit connection is low, and can be justified by being in the same broad universe, parallel universe, etc. It's mainly a production choice.
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