So you see ibara thinks of adonis as his one sided rival, meanwhile adonis is super perceptive so he always tries to make sure his friends are ok (or at least he asks them if he can help with anything or just checks in on them a lot because it's in his nature. Also adonis quoted something ibara said as a kid word for word and it freaked yuzuru put so much he desperately asked adonis where he got that quote and without even mentioning ibara by name they both just talked about him for a literal 15 minutes at the dinner table. Like eat ur food bro 🤨🤨 what r u gay or something?? Also

This is the biggest reason why I ship them but rei basically said that adonis has no cracks for ibara to bare his fangs and seep his venom into. Adonis is so innocent that none of ibaras tactics work on him because he is that honest and sweet and caring