Wait, we can use emojis now? Let me try
i want to know how did you interpret them as having adhd, was it explicit or implicit? sorry if this came out harsh i genuinely just wanna know
It's ok no offense taken! It's actually a combination of many attributes/quirks. When those compounds, it reads like a typical undiagnosed/late diagnosed ADHD. Idk if it's explicit enough but if you had your diagnosis or happen to be familiar with neurodivergency you'd find most of Ryo's traits as pretty relatable.
To name a few from chapter 1 alone:
ryo seems to struggling with impulsivity (buying jacket using mako's lesson fund), have big goals but lacking follow through (keichi's word), seeking same comfort food all time (cooking scene), really good pattern recognition (noticing keichi atypical micro habits when he's down).
I think there are more when you took account the whole story, but I'm pretty lazy to type them all. But then again that's my personal interpretation, so take it with a grain of salt.
It's a story of a gay man and his friend (who might have ADHD), stepped up as fathers for abandoned niece/daughter while navigating life as a non-traditional family in a conservative society.