Hi! I hope somebody else here has also read this manga. I forgot its title T.T It has a really nice art and majority of the characters are guys. There's a knight like guy with long hair tied in a ponytail, a thief, a blind singer with really fabulous hair and clothes, a detective and a righteous MC. They are in a place which contains some deadly traps. Along the way, they discover that the MC is a member of the Ignis(?) bloodline which means to say that he has the right of succession to be the king/emperor. At the ending he makes the other characters who are initially trapped with him his subjects then the knight swears his loyalty to him. Aaaaand, I recall being surprised because I expected it to be listed as shoujo but it seems otherwise at the time I read it.

I wish someone could remind me of its title. Thank you very much!

Sennen Meikyuu no Nana Ouji? I haven't read it yet, though, so just a guess.

@calstine You're right!~ Thank you very much. 😀

Glad to be of help! And now that I know what the story's like, I'm even more motivated to read it 🙂