C5 finished 4th & 5th story are the best, big bro selling his little bro to pay off his debt and the Military colonel stories were my favorite. I loved the fact how the Seme keeps control on his desires despite having him in bed next to him (I was really afraid they would have sex and Uke will thing Seme is using him as a toy for his 30k dollars) but fortunately Author-San put it in a simple way.
Colonel and Uke yeah they were really cute I just can't describe how adorable was Seme like he don't want to work because he keeps missing him etc and it was fun to see how his subordinates understood his feelings and kidnapped Uke to please thei're boss to make him work, I though it will end up as some rape scenario or something tragic scene but thanks it was full of fully moments
Don't know when this manga was realise but the characters drawing were a bit scary specially for the first and second story like how the 1st couple was having sex in the kitchen when they know his bro is on the other room, the baseball background story was also a bit uncomfortable the fact that the Uke keep letting him fu*k him because he needs his store items because he lost 'club money'
Koutetsu no Daitenshi