Ryusuke Sekino, a 5-month-old boy who was just 258 grams (9 ounces) when born, sits in the arms of his mother Toshiko Sekino.
Ryusuke Sekiya was delivered via emergency Caesarean section, after 24 weeks and five days of pregnancy as his mother Toshiko experienced hypertension.
At 258 grams (9.1 ounces) he was even lighter than the previous record holder, another Japanese boy who weighed just 268 grams when he was born last year. That baby was discharged from a Tokyo hospital in February.
When Ryusuke was born on October 1, 2018, he measured 22 centimetres (8.66 inches) tall, and medical staff kept him in a neonatal intensive care unit.
They used tubes to feed him, sometimes taking cotton swabs to apply his mother's milk to his mouth.
Nearly seven months later, the boy has grown 13 times in weight, now weighing over three kilogrammes. He will be released from Nagano Children's Hospital in central Japan over the weekend.
"When he was born, he was so small, and it seemed as if he would break with a touch. I was so worried," his mother Toshiko told reporters.
"Now he drinks milk. We can give him a bath. I am happy that I can see him growing," she said.
The smallest surviving girl was born in Germany in 2015 weighing 252 grams, according to a registry put together by the University of Iowa of the world's tiniest surviving babies.
The survival rate for tiny babies is substantially lower for boys than for girls.
The attack on schoolgirls in Japan is downright heinous, appalling and jangles the nerves of any civilised individual. Two people, including a schoolgirl, were stabbed to death and more than a dozen injured in Japan on Tuesday in a rampage that targeted the children as they waited for a bus. The 51-year-old attacker crept silently
Japan’s Imperial Palace has a new resident who earned an economics degree from Harvard, speaks at least five languages and has negotiated complicated trade deals as a diplomat. It’s not Emperor Naruhito, who took the Chrysanthemum Throne on Wednesday. It’s his wife, Empress Masako.
The last couple of days in Japan have been of huge historical significance. On Tuesday Emperor Akihito, who ascended the throne in 1989, completed his elaborate abdication ceremony; on Wednesday Emperor Naruhito took over, becoming the island nation’s 126th emperor and ushering in a new era.
“The ATR-42 aircraft skidded a little off an unpaved patch. The pilots exhibited great skill and composure to regain control and ensure everyone’s safety,” said a spokesperson for the national flag carrier.
Three named accused have been arrested and a manhunt has been launched for a fourth who remains unidentified, police said.
US Democratic lawmakers on Friday called President Donald Trump’s latest anti-immigration initiatives “unacceptable” and warned his administration against misappropriating funding authorized only for humanitarian use.