You argue with Rui because Rui doesn't like you being close to other people and he hasn't gotten your attention all this time, you keep blaming him even though this is because you made him depend on you

rui looks at you angrily the smile you usually see seems to have disappeared because of all this he just yell at you

"You only care about Tsukasa now..! Even every time you're with me you only play on your phone and chat Tsukasa.. I don't get your attention..! Even when you stroke my hair you don't look at me..!"