Utouto Suyasuya

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a game by Warumiko
Platform: PC (2023)
Editor Rating: 7.5/10, based on 1 review
User Rating: 8.0/10 - 1 vote
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See also: Eroge Games, Anime Games, Hentai Games, Dating Simulators
Utouto Suyasuya
Utouto Suyasuya
Utouto Suyasuya
Utouto Suyasuya

Utouto Suyasuya or Utosuya, Don't Wake Her Up as I have also seen it referred to is a sleeping sex simulator style of game that I was pretty pumped to finally get the chance to play this. There is a lot about this game that I like and I feel like if they just worked on a few things here and there this could actually be something pretty awesome. Hey, I enjoyed playing around with this, but I do feel like it is a one and done kind of lewd game if I am being brutally honest about it!

Waking Up Horny!

No matter if you call the game Utouto Suyasuya or Utosuya, Don't Wake Her Up, you are in for a pretty naughty and horny time as far as the story and premise of the game goes. Basically, we are awake and super horny, but our sexy lady partner is fast asleep. We decide that we are going to mess with her and see how horny we can get her, without actually waking her up. There are many of these sleeping sex simulator games out there and the premise is all pretty much the same.

Peeling Back The Blanket

One thing that I thought was pretty cool about Utouto Suyasuya or Utosuya, Don't Wake Her if you prefer is that she does not just sleep on her back like many ladies in this style of game do. Granted, she does start off that way, but you also have her sleeping on her front, side, and with her ass right up in the air too! It may not sound like much, but it does add a little variety to things and I thought that was kind of neat and if they had just expanded upon this, it could have gone from neat to awesome!

No One Ever Said Sleeping Sex Was Easy

The trouble with the Utouto Suyasuya/Utosuya, Don't Wake Her Up gameplay is that it does not hold your hand and it is very, very repetitive. There is a point/skill system at play here where you have to pleasure her with your hand and tongue before having full sex with her, but it is very much a case of trial and error and you just end up doing the same thing over and over again. The different sleeping positions do help to give you a bit of variety, but the way her meters drain for pleasure and her waking up feels pretty harsh. The thing is, with just a bit more work on the progression and perhaps a little tutorial, this could be pretty awesome and way more fun.

It's What Has Everyone Talking Right Now

What actually drew me towards Utouto Suyasuya and made me realize that it and Utosuya, Don't Wake Her Up were the same game was a heated discussion about the art. Now, I love the girl, I think that she is super cute and very sexy in a kind of “innocent” way if you know what I am saying. However, this game was done using AI for the art and some people die on the hill saying that you can tell. Well, to be honest, had I not read that, I would have had no clue that it was! I like the way the game looks, although, they could have brightened it up, I get that it dark and she is sleeping, but let us see a bit clearer! I do think her facial expressions could be a bit more varied as that is ultimately how you know if you did good or bad.


While what we have here with Utouto Suyasuya or Utosuya, Don't Wake Her Up, whatever you want to refer to it as is not perfect. I still had a fun time with this, I am pretty sure that I did not see all that the game had to offer as I did start to get frustrated and lose interest. However, while I was having fun with it, I was digging what I was experiencing. In many ways, this feels sort of like a demo or a trial game and if it is, I will certainly come back if the developer gives this another go as I do think they have something kind of cool here.


  • Our sleeping beauty is very cute
  • I liked how they had her sleeping in different positions
  • They had some neat ideas with the gameplay to give it more depth
  • It kind of has an arcade feel about it in the gameplay department


  • The game does not explain things well at all
  • I did find that I started to get a bit frustrated, the more I played

Download Utouto Suyasuya


System requirements:

  • PC compatible
  • Operating systems: Windows 10/Windows 8/Windows 7/2000/Vista/WinXP

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PC Screenshots

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