[3] Maruta was scheduled to fight the undefeated 10–0 Wilbert Berondo for the vacant WBC Youth bantamweight title on 31 July 2016, at the Sumiyoshi Ward Center in Osaka, Japan.
[4] Maruta won the fight by a sixth-round technical knockout, flooring the shorter Bedondo with a right hook to the liver.
[5] Maruta made his first WBC Youth title defense against Joe Tejones on 23 November 2016, at the Sumiyoshi SportsCenter in Osaka, Japan.
Maruta dropped Tejones with a body shot, which left the Filipino challenger unable to beat the ten count.
After easily beating the over-matched and debuting Ratipong Laobankho by a first-round knockout on 21 December 2017, Maruta was booked to face Arega Yunian on 22 April 2018.
[11] Maruta was next scheduled to face the interim OPBF super bantamweight champion Ben Mananquil on 23 August 2018.
Maruta dropped Tameda at the midway point of the round with a one-two, and finished him with a flurry of punches after the fight resumed.
[15] Maruta was next scheduled to face the former Japanese featherweight champion Takenori Ohashi in a title eliminator for that very same belt.
He managed to inflict enough damage to Ohashi to open a cut on the bridge of his nose, which forced the ringside physician to stop the bout.
[24] Maruta was expected to face Hong Quan Dinh for the WBO Oriental super lightweight title on 21 April 2023, at the Intercontinental Hotel in Ho Chi Minh City, Vietnam.