The instance in question was the Shota House.
I just realized that possession of loli and shotacon is illegal in most countries. I was very wrong to join that instance. That Akkoma instance is centered about such content originated from Japan or Japanese-style artwork.
The owner of the instance is visually impaired.
I was very inactive on that instance, until I deleted my account there back in October coz it would be frowned to be active there.
Originally, I discussed privately to someone on Discord about that.
I feel like I don’t want to know what Akkoma is
It’s a software, similar to Mastodon