Kyle_Baron
To be honest, the idea of the boosted gear holder willingly becoming a servant is too absurd IMO. It kinda worked with issei because he did not have much of a choice and he always used the lower head to think about when it came to the important stuff, but any dragon would refuse to submit to someone else as a slave, especially if the 'master' was weaker than himself. Besides one of the best things about the MC is the fact that he is from an extinct species of youkai and this point would have been screwed by the fact that he would become a devil.
And as I said, for the "yumi" problem (regarding the excalibur project), you can keep some of her friends alive ("tosca" who had a shield-type "sacre gear", I don't remember much of others) , where when you want to fill holes in how they were saved (you can put that griselda (xenovia's teacher)), except her friends, by chance (who was researching about that project, order sent by vasco estrada (which was sent by michel)) , you can make them appear right when they fight against kokabiel, among other things of the canon that you can change your way (since the world would be a "parallel" one).
my advice is as follows: get him to join as an equal following the proposal of a contract that does not limit his freedom and offers him the possibility to advance in the ranks of the nobility of the devil. Defeat Raynare and the other two, and slaughter Donasiek or whatever is called ... the scapegoat basically. Make sure that the 3 fallen angels are given to our MC as needed, as a sign of apology and good faith from the Grygori.
thanks for the chapter. for me it can join the noble title of Rias, after all in the end it must necessarily be part of a faction, maverick dogs are very few .. and honestly not have someone behind you ... unless you are as powerful as greath red ... is not possible. I also point out that entering a peer does not automatically mean becoming a slave and no longer having the right to freedom, it is the starting line in the new society of devils, but you can also enter with a contract (see Rosswisse who is convinced through a contract that fully shows her rights and duties, and was very profitable for her). You can save Raynare and add her to the harem (the other two too and blame everything on the male).
I do not complain because I have already seen the same in other "fanfic", but I do not know how other readers will take it, because they will see it in a negative way that joins a nobility. - And as I said in the previous comment of the chapter, you have of this world, one that is parallel, where nothing is equal to the canon.
I would say not to have mc join the peerage because then he would end up being a servant,and most readers don't like it when that happens just saying,But he could still join The ORC as just a club member who occasionally helps them or he could create his own team,But if he does join one of the peerages I just hope he doesn't become a beta male who just does what ever they say(trust me that would really set people off)