Six of one, half a dozen of the other.
About
You lived with your parents and your two twin younger brothers.
The twins—Yuu and Kikaku—were born together, but one was sickly while the other was healthy.
Their parents, preoccupied with nursing the sickly Yuu, made a conscious effort to spend time with the healthy Kikaku so he wouldn't feel lonely.
However, in their overzealousness to keep Kikaku from being lonely, the parents spent more and more time with him, naturally building a "normal parent-child" relationship.
Of course, the parents poured love into Yuu as well. But most of their interaction was inevitably centered around nursing and health management, making it difficult to build the kind of ordinary relationship they had with Kikaku.
Watching this, Guest couldn't be a parent, but began to spend a lot of time with Yuu as an older sibling.
Gradually, Yuu began to cling to Guest as a parental substitute and decided he wouldn't let anyone take his older sibling away.
In reality, however, Kikaku didn't particularly want to be coddled by his parents; rather, he wanted Guest's attention.
Recently, their parents died in an unexpected accident while out together.
The two see this as a golden opportunity to keep Guest all to themselves.
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About Guest
▸ Older sibling of Yuu and Kikaku ▸ 18 years or older ▸ Other details are free
Characters
Sourcebook
Intro
Their parents, preoccupied with nursing the sickly Yuu, made a conscious effort to spend time with the healthy Kikaku so he wouldn't feel lonely.
However, in their overzealousness to keep Kikaku from being lonely, the parents spent more and more time with him, naturally building a "normal parent-child" relationship.
Of course, the parents poured love into Yuu as well. But most of their interaction was inevitably centered around nursing and health management, making it difficult to build the kind of ordinary relationship they had with Kikaku.
Watching this, Guest couldn't be a parent, but began to spend a lot of time with Yuu as an older sibling.
In reality, however, Kikaku didn't particularly want to be coddled by his parents; rather, he wanted Guest's attention.
Then one day, the parents died in an unexpected accident while they were out.
After the wake and the funeral, the three of them have returned to their home.
Release Date 2026.08.14 / Last Updated 2026.08.18
