Onose Sensei’s kendo journey began under the guidance of Takeshi Ozawa, the director of the Mito Toubukan in Ibaraki Prefecture. Mito Toubukan is a historic dojo, renowned for its association with the All-Japan Youth Kendo Training Tournament. The Hanshi at this dojo represent the highest standards of kendo, and their teachings profoundly shaped Onose Sensei's approach to preserving the samurai spirit in kendo.

In 1971, Onose Sensei joined the Ibaraki Prefectural Office Kendo Club, where he honed his skills. By 1976, he was appointed Deputy Director of the Satakekan, a dojo known for its "high-speed men technique," which led its practitioners to numerous tournament victories. His contributions to Satakekan's success culminated in 2000 when he became the Director of the Kendo Club at the Ibaraki Prefectural Office.

After his resignation as Director of the Ibaraki Prefectural Kendo Club in 2006, Onose Sensei was appointed as the representative of Satakekan in 2007, further solidifying his legacy in the kendo community. In 2011, he visited Negros Island as part of a cultural exchange program, initially bringing Japanese music through the Ibaraki Concert in Bago City. Inspired by the success of this event, Onose Sensei sought to bring the Japanese martial art of kendo to the region. With support from companies in Ibaraki, the OISCA Budojo was constructed, marking the beginning of kendo’s roots in Negros, and he became the director of OISCA Budojo.

In 2017, Onose Sensei met Jowash Saballero, a native of Negros, during a cultural exchange between Tokiwa University and Bago City College.

Onose Sensei's commitment to excellence was recognized in 2018 when he was promoted to 6th Dan in Kendo.

Recognizing Jowash’s potential and dedication, Onose Sensei appointed him as the dojo’s Sensei in 2022. Under Jowash Sensei’s guidance, kendo spread throughout the province, and the Negros Kendo Team began achieving remarkable successes in regional competitions. To maintain high standards, Onose Sensei invites Jowash Sensei to Japan annually, where he trains with elite instructors in Ibaraki Prefecture and faces rigorous dan examinations.

Onose Sensei's dedication to teaching continued, and in 2024, he was appointed as the director of the new Negros Shiseikan Kendo Club, continuing his lifelong mission of promoting the samurai spirit and kendo.

The dojo was later renamed Shiseikan (至誠館), a name that represents its guiding principles: "Shi," meaning the highest, and "Sei," meaning sincerity. These values are core to Onose Sensei’s belief that without sincerity, the true spirit of a samurai cannot be achieved. The name Shiseikan was personally chosen by Onose Sensei, reflecting his deep understanding of the art and his commitment to upholding the samurai way.

Today, Shiseikan Dojo is the leading kendo organization in Negros, affiliated with the Kendo Federation of the Philippines. Its members represent Negros Island at the All-Philippines Kendo Tournament, consistently winning medals and accolades. They have also earned gold, silver, bronze, and the Fighting Spirit awards at the Visayas Tournament.

Every August, the dojo commemorates its anniversary with the most anticipated kendo tournament in Negros. This prestigious event brings together kendo practitioners from across the region to test their skills, honor, and dedication. It’s a celebration of the martial spirit instilled by Onose Sensei.

The kendo community in Negros has flourished, uniting individuals who share a passion for self-improvement through the art of kendo. This community embodies kindness, humility, and a commitment to personal growth, guiding each member to strive towards becoming the best version of themselves, both in and outside the dojo.