Official social media accounts of big companies are often labeled as "serious", "cold", and "commercial". However, two Japanese tech companies, Sharp Corp., the electronics manufacturer, and Tanita Corp., maker of scales and health products, have attracted many followers on Twitter by tweeting "silly" things to each other.

There is even more: an extraordinary romance, or "bromance," between these two corporations has also blossomed from the social media platform, which has drawn much attention.

The man behind the Sharp icon is Takahiro Yamamoto, digital marketing supervisor of Sharp who has run the company's official Twitter account for six years. Besides tweeting about company and products, Yamamoto also posts birthday blessings to popular anime characters and adds various emoji in contents to appeal to followers. These "silly" tweets, that make the account looks like a fake one, helped Sharp amassed more than 400,000 followers.

Interactions between the duo are what interest followers the most: Sharp-san has sent drinking invitation to Tanita-kun on Twitter, and Tanita-kun replied with funny tone. 

"Tanita-san was the pioneer," Yamamoto told Bloomberg that he started to loosen up after reading Tanita's posts. 

"There was no plan in the beginning" to have the two accounts work so closely together. "It was a very natural back-and-forth," replied the man behind Tanita's account.

The relationship between these two companies even inspired a comic book series which attracted a huge amount of readers. 

This humorous online manga, "Sharp-san to Tanita-kun", is hosted on Pixiv Comics that debuted in June 2015. It re-imagines these two tech companies as handsome young professionals who spend too little time working and too much time goofing around on Twitter.

This cyber-relationship draws a lot of attention, which benefits both companies  because consumers in Japan have come to rely on social media to gather news about corporations and products that they’re interested in, according to Yuri Gorai, an analyst at Euromonitor in Tokyo. 

Surely it'll be a big deal for the fans if Sharp-san and Tanita-kun met in real life one day.