God, This Daily Life Is a Disaster. Can We Have a Different One?

[Prequel sequel planned: God Thinks This Is Quite Bad. Third-person, multiple perspectives, with a SuperBat side couple. In a nutshell: "A detective in Gotham, seriously?"]

Note:

First person, from Saiki's perspective.

The main couple is a straight romance, with BL/GL elements.

Other common elements besides Bungo Stray Dogs and Naruto: Ultraman, Kamen Rider, Katekyo Hitman Reborn, and FGO. (These are just the author's tastes, sorry!)

Blurb:

The world of psychics has been transmigrated into so many times that it's like a sieve.

After one wave after another of transmigrators put him through his paces, the psychic considered himself a grandmaster, until...

His world collided with another world, swallowed it whole, and fused with it.

A few days later, a new transfer student arrived in his class. She introduced herself as "Sawada Mari."

The psychic assumed she was another transmigrator after him, and prepared to meet whatever tricks she had in store.

But...

First day at the new school.

Sawada Mari's inner voice: That pink-haired guy looks familiar. I feel like I've heard his name somewhere... Emmm, can't remember. Never mind.

Second day at the new school. A new Japanese teacher, a bandage-wrapped man with the same name as a great literary master, joined the staff.

The psychic caught Sawada Mari lecturing him like a misbehaving child because the bandage guy had gone swimming in the river despite being injured.

Third day at the new school.

As the psychic dealt with other transmigrators trying to curry (tribute) favor with him, Sawada Mari internally complained that the sweets from the shop on one of their discount coupons were awful.

Fourth day at the new school.

Sawada Mari had already tried every dessert in town, and spent class recalling and rating them.

The psychic, who had memorized all her dessert reviews so he could check them out later, thought: Is her stomach a black hole?

The ...th day at the new school.

The psychic ran into a beautiful little white fox. It was internally complaining that the entrance to the demon world's dessert-tasting festival was too hard to find, and its thoughts were exactly the same as Sawada Mari's.

The psychic: ...

The psychic and the little white fox who had spotted him stared at each other.

Finally, the psychic said, "Where is it? I'll take you there."

Theme: Meeting someone is fate