A baby cries while held up by an amateur sumo wrestler during 'Nakizumo' or a baby-crying sumo contest, where two wrestlers hold a baby each and a referee makes faces and loud noises to make them cry and determine the winner based on the loudest baby, at Sensoji temple in Tokyo, Japan, April 28, 2024. The ritual is believed to aid the healthy growth of the children and ward off evil spirits. REUTERS/Issei Kato

Babies with their parents take part in a ring-entering ceremony during 'Nakizumo' or a baby-crying sumo contest, where two wrestlers hold a baby each and a referee makes faces and loud noises to make them cry and determines the winner based on the loudest baby, at Sensoji temple in Tokyo, Japan, April 28, 2024. The ritual is believed to aid the healthy growth of the children and ward off evil spirits. REUTERS/Issei Kato

A baby cries while held up by amateur sumo wrestlers during 'Nakizumo' or a baby-crying sumo contest, where two wrestlers hold a baby each and a referee makes faces and loud noises to make them cry and determines the winner based on the loudest baby, at Sensoji temple in Tokyo, Japan, April 28, 2024. The ritual is believed to aid the healthy growth of the children and ward off evil spirits. REUTERS/Issei Kato

Babies cry as they are held up by amateur sumo wrestlers during 'Nakizumo' or a baby crying sumo contest, where two wrestlers hold a baby each while a referee makes faces and loud noises to make them cry and determine the winner based on the loudest baby, at Sensoji temple in Tokyo, Japan, April 28, 2024. The ritual is believed to aid the healthy growth of the children and ward off evil spirits. REUTERS/Issei Kato

Ring assistants wear masks to scare a baby held up by an amateur sumo wrestler during 'Nakizumo' or a baby-crying sumo contest, where two wrestlers hold a baby each and a referee makes faces and loud noises to make them cry and determine the winner based on the loudest baby, at Sensoji temple in Tokyo, Japan, April 28, 2024. The ritual is believed to aid the healthy growth of the children and ward off evil spirits. REUTERS/Issei Kato

Ring assistants wear masks to scare babies held up by amateur sumo wrestlers during 'Nakizumo' or a baby-crying sumo contest, where two wrestlers hold a baby each and a referee makes faces and loud noises to make them cry and determines the winner based on the loudest baby, at Sensoji temple in Tokyo, Japan, April 28, 2024. The ritual is believed to aid the healthy growth of the children and ward off evil spirits. REUTERS/Issei Kato

Babies cry while held up by amateur sumo wrestlers during 'Nakizumo' or a baby-crying sumo contest, where two wrestlers hold a baby each and a referee makes faces and loud noises to make them cry and determines the winner based on the loudest baby, at Sensoji temple in Tokyo, Japan, April 28, 2024. The ritual is believed to aid the healthy growth of the children and ward off evil spirits. REUTERS/Issei Kato

A ring assistant wears a mask to scare a baby held up by an amateur sumo wrestler during 'Nakizumo' or a baby-crying sumo contest, where two wrestlers hold a baby each and a referee makes faces and loud noises to make them cry and determine the winner based on the loudest baby, at Sensoji temple in Tokyo, Japan, April 28, 2024. The ritual is believed to aid the healthy growth of the children and ward off evil spirits. REUTERS/Issei Kato

Babies cry while held up by amateur sumo wrestlers during 'Nakizumo' or a baby-crying sumo contest, where two wrestlers hold a baby each and a referee makes faces and loud noises to make them cry and determines the winner based on the loudest baby, at Sensoji temple in Tokyo, Japan, April 28, 2024. The ritual is believed to aid the healthy growth of the children and ward off evil spirits. REUTERS/Issei Kato

A baby cries while held up by amateur sumo wrestlers during 'Nakizumo' or a baby-crying sumo contest, where two wrestlers hold a baby each and a referee makes faces and loud noises to make them cry and determines the winner based on the loudest baby, at Sensoji temple in Tokyo, Japan, April 28, 2024. The ritual is believed to aid the healthy growth of the children and ward off evil spirits. REUTERS/Issei Kato

Babies cry while held up by amateur sumo wrestlers during 'Nakizumo' or a baby-crying sumo contest, where two wrestlers hold a baby each and a referee makes faces and loud noises to make them cry and determine the winner based on the loudest baby, at Sensoji temple in Tokyo, Japan, April 28, 2024. The ritual is believed to aid the healthy growth of the children and ward off evil spirits. REUTERS/Issei Kato

A baby cries while held up by an amateur sumo wrestler during 'Nakizumo' or a baby crying sumo contest, where two wrestlers hold a baby each and a referee makes faces and loud noises to make them cry and determine the winner based on the loudest baby, at Sensoji temple in Tokyo, Japan, April 28, 2024. The ritual is believed to aid the healthy growth of the children and ward off evil spirits. REUTERS/Issei Kato

Ring assistants wear masks to scare babies held up by amateur sumo wrestlers during 'Nakizumo' or a baby-crying sumo contest, where two wrestlers hold a baby each and a referee makes faces and loud noises to make them cry to determine the winner based on the loudest baby, at Sensoji temple in Tokyo, Japan, April 28, 2024. The ritual is believed to aid the healthy growth of the children and ward off evil spirits. REUTERS/Issei Kato

Babies and their parents take part in a ring-entering ceremony during 'Nakizumo' or a baby-crying sumo contest, where two wrestlers hold a baby each and a referee makes faces and loud noises to make them cry and determines the winner based on the loudest baby, at Sensoji temple in Tokyo, Japan, April 28, 2024. The ritual is believed to aid the healthy growth of the children and ward off evil spirits. REUTERS/Issei Kato