Tatsu No Otoshigo
(chap-1-4,5.5) One day a mechanic finds a child with horns,Tsuno fainted in the mountain and brings him home. After discussing with his friend he decided too look after the kid as him father..But after 10 years Tsuno has grown feelings for his father (chap-5)After school with an invisible man - Actually Mikoto isn't invisible but it's Ikuo who ignores & avoids looking at him as if he's an invisible man eversince Mikoto confessed to him... later on Ikuo eventually accepts his true feelings .. I really like this one a lot wish it had an entire volume
Koisuru Ryuu no Shima
(chap-1-3.5) Black dragon arc High schooler Ryuzaki is the reincarnation of the black dragon who was treated like a god in the island he stays ..Now after reincarnation he is searching for his previous lover who has also reincarnated with the dragon scales mark & in this quest his underling Yasu is helping him ...But over time Ryuzaki started finding Yasu cute & lovable but keeps on ignoring his feeling in order to search for his fated one .. (chap-4-7) white dragon arc Nishino, who had graduated from high school and was spending his days with part-time jobs to pay for his sister's treatment, “Destiny” appeared. After being abducted by a tall, white-haired man with overwhelming pressure named Byakuya (seems like he’s a legendary dragon that has been living since ancient times), in no time, he was stripped off his clothes and had sex that blew his mind. With his sister’s medical expenses as the condition, Nishino was being kept by Byakuya, which made his repulsion growing. However, seeing the usually cold Byakuya who become lustful and engrossed toward him during sex, Nishino’s heart starts fluttering…?!
Kamisama no Uroko