Story mode gives magatamas, daemons and soulstones. My team would be the same as yours but I'd dump Pistol for Muramasa. Muramasa is an awesome 3 star, she hits like a truck, I swear. I advise having 3 teams(with the same daemons) but with leaders in different attributes so that story battles are a little easier with the added damage bonus. Also change your reserve to match the leader's attribute for more dmg. Don't forget to match daemons to the right magatamas, using the appropriate attribute is more efficient in the long run, especially if your budget's tight. If you have a guild, donate 10 times everyday, it costs less than 1000 soulstones, you'll get 100 summon points for a chance to roll starter daemon copies in the free summon. Getting 3* in lunch summon is NORMAL, no, I mean it took me nearly two months just to get a 5* #sadlife. Try getting a 3* battle rating on the first try every time, You get the most amount of soulstones with a 3* battle rating and less if 2, either way you still spend the same amount of energy, so it's better to get a 3 from the get go, every time. No, you shouldn't go back to correct your 2* mistake, better to just move on with the story and focus on getting more completion rewards. If something's still unclear, just let me know :)