Looking for a specific isekai

[jak]

I only remember the first chapter. The main guy is with his 2 friends, a guy and girl. The main guy and girl both get isekai'd together and it shows them fight this big unicorn.

 

[Bottersnike]

Sounds like Isekai Cheat Magician. https://mangadex.cc/title/21962/isekai-cheat-magician