he was hinting at it with his expressions. he was actually quite uncomfortable whenever he saw the uke with a client
um, first if you're underage you shouldn't read this, as you didn't understand the chemistry and story here, sorry but by my prediction that you're youngster. 2nd - Kiryu -seme- clearly showed that he personally chose Mahiro -uke- for his club because he took interest in him. At first it was just picking up curiosity. As you had read others said that Kiryu is hard to please and never keeps close to him anyone. Mahiro was wild stubborn and daring, he wanted to do everything for the race BUT he didn't realise that he wanted also to do everything just to see reaction in Kiryu's eyes. He got affected by that gaze and could feel addiction to him. Later on Kiryu started teasing him and making him do those all 'jobs' to provoke him and see hi reaction since he's rich bossycapricious, haughty and superior high and mighty person who no one can defy he didn't want to give in easily to acknowledge that he'd fallen for uke. this is adult world and they don't show easily 'lovey-dovey' atmosphere and emotions. Mahiro started falling for Kiryu but also didn't want to admit it openly but since he's wild and presumptuous he continued to show up and catching attention of boss that he felt unconsciously also had affection for him. it's like playing cat with mouse, but mouse played the cat. it's clear at the end they fell for each other and seme won't give uke to anyone beside him anymore, it's just that they need loooong way to admit it by themself and convey their love with words, before playing that 'game'.
Where is the love? Isn't the seme just prostituting the uke? At the end, seme just show a little feeling like possessive of a favorite toy - no love. ╥﹏╥
I shouldn't expect anything.