I always interpreted Taro and Janus as Mentor-Mentee or Father-Son relationship, or just really close friends. It's interesting to see how other people view them
Ye I kinda leave my chars up to interpretation for others tho I do have my canon ideas for em. Taro and Janus were definitely like mentor/mentee at first since it was Taro who helped Janus pump up his magic abilities to where they are now since he was more or less a very powerful lackey.
I would say things changed when Rose hatched since Janus is a complete potato and had no idea what he was doing so Taro stepped in. Gave him a sense of family he hadn’t had for a long time. Taro wasn’t really upfront about it until Rose got a bit older and he had some time to really think about how he felt.












