30-sai made Doutei dato Mahoutsukai ni Nareru Rashii

30-year-old virgin Kiyoshi Adachi discovers he has the ability to hear people's thoughts when he touches them. It's mostly a daily annoyance, until his powers reveal that his handsome and popular coworker Yuichi Kurosawa only has eyes for him!

Adachi asks his friend and romance-novelist, Tsuge, for advice on his predicament. At work, Adachi uses his power to help Kurosawa. They have an awkward exchange while out drinking with their coworkers.

While at a company party, Kurosawa recognizes that he is becoming jealous when other people give Adachi attention. Adachi learns that despite his outward composure, Kurosawa has underlying anxiety, which Adachi finds relatable. After an awkward experience in a sauna, Kurosawa reflects on how he came to develop a crush on Adachi. Adachi tells Kurosawa that being around him has helped him to develop self-confidence.

Following Tsuge's 30th birthday, he finds that he now has mind-reading powers, much to his distress. Adachi sees Kurosawa with a beautiful woman and finds himself become jealous.

Kurosawa cares for Adachi while he is ill. Meanwhile, coworkers notice how close the two are becoming.

Spending time at work with Fujisaki makes Adachi finally come to a decision about his feelings for Kurosawa. Meanwhile, as Tsuge agonizes over his crush on the deliveryman, they run into each other out on the street.

Kurosawa and Adachi go out on their first date together, and Adachi tries not to let his nerves get the better of him.

Adachi agonizes over whether to tell Kurosawa the truth about his powers, Tsuge accompanies Minato to a club and struggles with feeling out of place, and Kurosawa's jealousy gets the better of him again at a work event.

Tsuge tries to mitigate the awkwardness between Minato and Rokkaku. Adachi gets an offer to transfer to their company's newly-established Nagasaki branch, but worries about moving far away from Kurosawa when they've only just started dating.

Adachi tries to figure out how to mend his relationship with Kurosawa. As Minato tries to chase his dream of being a professional dancer, Tsuge does his best to support him.

"I have to tell him." Adachi writes Kurosawa a letter to lay out his feelings as clearly as he can. Tsuge tries to be content to cheer Minato on from the shadows, but loneliness gets the better of him.

Adachi and Kurosawa deepen their relationship as Adachi continues to contemplate taking a job transfer to Nagasaki.