Re: [DMM] Taimanin Asagi
hxxp://taimaninarena.wiki.fc2.com/wiki/%E3%83%88%E3%83%83%E3%83%97%E3%83%9A%E3%83%BC%E3%82%B8
That's a wiki for it. Toss that into google translate. Not sure what you're referring to, but to my knowledge certain cards can boost other cards depending on who you have in your offensive team.
The game works like a mobile app card game. You do quests to get cards, gold, items, fight bosses. You can enhance your cards to make them stronger. Sell cards, fight in pvp to get some items. From the hongfire thread, apparently rank 50 in the arena is highest and focusing your BP on bosses at that stage is better. Gacha is where you can draw cards. You get tickets for rare cards, gold coins for a 50% chance to get rare cards and the silver coins are for drawing 100 coins per the easier Gacha pack which may contain rare cards but mostly cheapy ones for you to sell or use for training your good cards.
Also, if you have two of the same cards, you can use them to level up that cards skill.
I'm not entirely sure how to level up to get H-scenes yet though. Or how to add friends for that matter.
Edit: Not sure about the silver coins thing
Edit2: I think it's 200 silver coins per pick. Also, to open up H scenes, when you look at the cards, bottom left it will say Lvl# H something. That's how many levels to go before you get the H scene.