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Sasaki and Peeps: That Time I Got Dragged into a Psychic Battle in Modern Times While Trying to Enjoy a Relaxing Life in Another World ~Looks Like Magical Girls Are On Deck~

Sasaki to Pi-chan: Isekai de Slow Life o Tanoshi Mou Toshitara, Gendai de Inou Battle ni Makikomareta Ken—Mahou Shoujo Up o Hajimeta You desu
佐々木とピーちゃん 異世界でスローライフを楽しもうとしたら、現代で異能バトルに巻き込まれた件~魔法少女がアップを始めたようです~
사사키와 피짱
Sasaki và Pii-chan: Chuyện về tôi bị cuốn vào trận chiến Dị năng ở thời hiện đại trong khi cố gắng tận hưởng lối sống chậm rãi ở dị giới ~Xem ra Ma pháp Thiếu nữ cũng xuất trận~
Сасаки и Пи: В попытке насладиться неторопливой жизнью в другом мире я угодил в битву между обладателями особых способностей в наше время
佐佐木与文鸟小哔
佐佐木與小嗶 想在異世界享受悠哉生活,卻在現代被捲入異能戰鬥 ~魔法少女好像開始熱身了~

Adaptation

novel
and 1 more
The cute little bird I bought at a pet store is a reincarnated sage from another world.
Given the opportunity to cross to another world with the power of magic, Sasaki brings modern goods to the other world and starts a business.
While traveling back and forth between worlds - earning money, training in magic, and eating delicious food - he aims to live a leisurely, slow life. But one day, on his way home from work, he encounters an alien being. He uses the magic of the Sage Seal to survive the battle, but his abilities are recognized and he is scouted by the Cabinet Office's Bureau of Countermeasures for Supernatural Phenomena.
Otherworldly fantasy x battle of super-power abilities x love comedy with an age gap (?).
There's also a magical girl, a neighbor JC, a coworker JK, a nobleman, a loli witch, a prince, etc…
It's a story that goes back and forth between the fantasy world and modern Japan, with all the tropes of the genre thrown in. 

(Source: Bookwalker, translated)