The first one has martial arts, most likely judo. The uke is the captain and the beginning he's trying to get members for his unpopular club and tries to use his sister to get boys to come. He then finds out that a past champion, the seme, is a freshmen and enlists him with his sister as bait. Little did he know he's the reason why the seme entered and even started judo. Then the first chapter ends with them having sex...in the dojo and it's hot and amazing and smexy. >///<

I've tried looking up judo, martial arts, strong uke, tough uke and still no avail ;-;
Any help is appreciated.
You'll get my love if you find it. <33

Edit: Oh shoot sorry I found the second manga XP

Is it Only You (TOHJOH Asami)?

Holy--YES how did I miss this??
Thank you so much! Now I can sleep (it's almost 4a, where I live >.<)
I love you so much right now, thank you again!