So its related to this? http://www.mangago.zone/read-manga/oath_of_allegiance/...

Responses
    RumiK May 12, 2020 12:51 am

    Yep, the same characters appear

    Luna May 12, 2020 1:47 am

    Yes. (1) Oath of Allegiance, (2) Sense of Loyalty then this series