Volume 1, Blue Sparrow x Bungo Stray Dogs, is complete and available for reading.

The Trail Blazers' darling, the Galactic Succubus, is essentially unromantic and doesn't ship any other couples!

The characters in the game are invincible! Ignoring combat power, theoretically speaking, even game support characters are invincible within the planet.

On the day of the Trail Blazers' birthday, he invited all his friends to a party. As a result, while the Trail Blazers were drinking and singing, he crashed into Ahaha while driving the Star Train.

Aha: Hahahaha, Aha is so embarrassing, Aha is so embarrassing!

Trail Blazers: This guy is faking it!

The Star Train crashed, throwing the other train crew members off the tracks. So, with tears in their eyes, they had to go from world to world to rescue them.

Oh my god, all my friends have gone missing.

The order is not fixed, and the characters in the world are not fixed either. I'll just write whatever comes to mind. I just wanted to write about it after playing Honkai Impact 3rd. If there are any worlds you'd like to see mentioned, feel free to suggest them.

Bai'e xfsf (I probably won't be the first person on the internet to write fsf, the pioneer servant)

Robin x Slice-of-Life Anime (Love Live!, My Favorite Idol, Lonely Rock, Full Moon o Sagashite... a series of niche or popular anime)

Sand Gold x Hunter has beautiful eyes, a niche faith, his tribe was slaughtered, leaving only orphans. Who is this person? It's so hard to guess. Is it Kurapika?

Qingque x Wenye Qingque: It's fun to slack off for a while, and it's even more fun to slack off all the time.

Black Swan x Frilian Black Swan: I will take action.

The above may be written later, depending on inspiration.

[Detective + FGO + Slice-of-Life; basically an otaku-style novel; beloved trope of Heroic Spirits falling in love; NOT a harem; Warning: MC’s presence is relatively low — if that bothers you, turn back!! Some Heroic Spirits’ genders follow historical records, and there will be CP pairings, e.g., Old Saber x Eriri, Oda Nobunaga x Miku Nakano. Personalities of Heroic Spirits are kept intact. If you can’t accept that, just… don’t read!]

Transmigrating into a world that’s a crossover of slice-of-life anime and Detective Conan, Aoki Makoto, with no knowledge of the plot, thought his life would be simple: rely on his phone from his past life, stay far away from trouble, focus on making money, and spend a rich but boring life.

Little did he expect that his real cheat would arrive… sixteen years late!

System: “Become a Master and save the world!”

Aoki Makoto: “Do I get a girlfriend?”

System: “…Huh?”

Aoki Makoto: “Why am I not interested in all those anime heroines? Because my ideal type is Gudako!”

System: “…Fine. If you succeed, I can help introduce you. But first, I have some bad news.”

Aoki Makoto: “In front of Gudako, nothing is a problem.”

System: “The detailed personality data of the Heroic Spirits has been lost, so you’ll have to play them yourself. In other words… have you read any ‘vest novels’*?”

Aoki Makoto: “…No problem, no problem. Oh, by the way, does your introduction come with a marriage guarantee?”

And so begins the story of wearing the “vest” of Heroic Spirits to save the world… while also, incidentally, falling in love.