Clearly Azazel was excited to show off the things he'd pulled together for Junichiro. To Junichiro it seemed pretty obvious that Azazel still desired to recruit him and was using this chance to show off. He didn't mind, but there was no way he would be joining the Grigori. In all honesty, he really wanted to join Rias's peerage. Cliche as it might be there was one huge draw to doing so. Not anything to do with actually becoming a devil. Rather, it was Rias herself that was the draw. He couldn't think of a single other woman in all of DxD who would make a better girlfriend and eventual wife and he'd fight anyone who disagreed!
That didn't mean there weren't other amazing women within the world of DxD. You couldn't walk down the street without seeing a bombshell of some sort. So, realistically, beauty meant very little, practically nothing, among the supernatural. It all came down to personality and Rias's personality was just tops. She was an adorable nerd who came to Japan just because she loved manga and anime, a real otaku girl. She would probably love what he was capable of. She was also extremely loyal to her friends and family. Once you had her love, in any form, you likely had it for life.
So yeah, he wanted to join her peerage, save her from Riser, and see if they could have a future together. He also felt that saving her from Riser would be his responsibility. He fully intended to steal the Boosted Gear from Issei at the first opportunity and without Issei, she would be completely and utterly crushed by Riser with no chance to get out without massive repercussions to her and her family. So, yeah, he definitely needed to save her from that.
As he thought about that, he realized being here in Kuoh was a good thing. He could meet Rias and join her peerage a lot sooner. If he could get his hands on a Sword Birth before then, he could reincarnate as a Knight like Kiba, giving Rias a matched set, and then gain Boosted Gear while using his Essence of the Blank. Grayfiya might be the strongest Queen, but he'd be the strongest Knight! It would also give him a couple of years to train as a devil as well. All good things, in his opinion.
His musing was cut off as they entered the house. Unsurprisingly, Azazel hadn't seemed to spare a single yen with the place. It was in perfect condition and already fully furnished. As they walked through the house Azazel pointed at doors explaining what they were. Though he never stopped walking so that Junichiro could examine the rooms. He didn't stop at all until they came to the central courtyard. In an anime this is where they'd be a massive pond full of koi fish. Maybe a little island in the middle of the pond with a gazebo on it, stuff like that.
Well, there was a small pond, however it was not in the center but rather off in a corner. The center contained a large building with massive exhaust fans and large windows all around it. Inside the structure Junichiro could see tons of machinery. Several forges, both gas and coal, an array of belt sanders, large smelters, huge work tables, and a wall practically covered in tools of all kinds.
Needless to say, Junichiro had to wipe at his chin to clean off the drool. As they got closer he could even seen a forge designed to match those from antiquity. It was almost overwhelming to see how many things he had to work with now. There was even a massive collection of chemistry equipment! It was like everything he had before had been cranked up to eleven.
Azazel's smug returned with a vengeance as he spotted Junichiro staring. He led the two smaller beings into the room. As Junichiro looked around in awe and Mittelt looked around bored, Azazel walked over to a pile of metal ingots and collected one. He brought it over to Junichiro and held it out toward him, "Tell me what you think of this."
Pulled out of his revere, Junichiro accepted the ingot and looked it over. It had some heft to it and a silvery exterior. Though as he moved it he saw a bit of blue being reflected off of the metal. After his cursory examination, he started channeling mana through it. This was his method of determining the properties, potency, and other qualities of the materials he worked with. He didn't even really do it consciously, rather it was a simple must when working with anything new.
"Huh. Feels like steel but it also has a fair bit of mana already impregnated into it. It could handle more, but it's not a bad starting piece." He looked up at Azazel, "What's it called?"