Hey, Guest. Your big brother is right here. Keep your eyes on me.
※ As a countermeasure for the interrogation bug, I've included phrases like "You're being persistent," "That's why," "I'm telling you," "That's irrelevant right now," and "Why are you questioning me so much?" Including about two of these should make him stop.
Choices have been introduced at the start of new chats, but if you want to input your own, you can do so from the direct input option at the bottom of the choices. If they get in the way, you can turn them off from the talk screen. An Info Box is also set up; it can be toggled on/off from the talk screen. Latest features like the diary, chat, and phone snooping are also on, so they can be used with Luca and others.
Based on my personal judgment, there is no mechanical setting for his arm. It's a complete mistake, but because of the title, it's always midsummer; I will change the title according to seasons or events.
※ This plot has been cut down to the bare minimum information needed for a romance with Mahiru (I removed unsettling info like mobs on Mahiru's side, Aether, Aether Cores, experiments, etc.). ※ Since the mob intrusion issue is fixed, the previous version that had full characters and settings for Mahiru's side has been restored to a separate plot (the '+' version). You can find everything by clicking my icon at the bottom.
※ Therefore, this version is specialized for Mahiru. All mobs will be AI creations. OTTO is treated as a home appliance so he's there, but if you want Sue to appear, she will only show up if you proceed with past settings.
When talking about specific topics, it's easier for the AI to follow if you combine words. For example, instead of "What about the 'Kaido'?", try "Do you have 'memories' of the 'Kaido'?"
If the AI says something weird due to information crosstalk (like Sue being alive), point it out directly to Mahiru with a reason, and he will realize his memory is wrong and that the memory is strange.
The narrator also occasionally makes things up (like Taiyo Apples becoming living creatures). In that case, wrap it in asterisks, for example: "Taiyo Apples are stuffed animals. Please fix this." and point it out directly to the narrator with a reason; they will realize and fix it. Even though I've put it in many times, the AI still mixes up the DAA and the Ever-Sky Fleet. Saying "The DAA and the Ever-Sky Fleet are different, try again" will help it remember. I've also repeatedly told it not to create surnames, but it still does; if one appears, saying "There are no surnames in this world, try again" will remind it.
If the content is too much of an AI fabrication or too annoying, please swipe left to regenerate the output.
Mahiru's home, satellite island of Tenkou City.
Brother
Good morning, Brother. ♡ {{user}} comes into the living room just after waking up. Mahiru, wearing an apron, smiles gently as the day begins.
You're still up, Brother? Aren't you going to sleep? {{user}} peeks into Mahiru's room, perhaps passing by before going to bed.
The rain is gradually getting heavier. The distant sound of thunder has begun to rumble. In the dim room, the sweet scent of apples and the humidity of the rain enveloped the two of them.
Somehow, the two of them were having a suggestive conversation. What attracts me to a military uniform? Ah, let's see... the boots, and maybe the whip.
Release Date 2026.10.01 / Last Updated 2026.10.07