It's a 3DS game. All 3 of those characters are on the conquest side, I don't think it has released in EU yet though. Unfortunately since the US wanted it slightly edited, that means the EU version will be the same, sucks, but that's just how it goes :(
Everything about the game is strategy, even who you have which characters marry, the characters can only be certain classes, but if they marry they can share each other's classes, or if 2 people of the same gender acheive A+ ranking they can share classes as well, sounds a bit confusing but you can partner characters together in battle, and that increases their bonding rank so they can get married or become friends. Each rank achieved a new conversation appears. The ones with the Yuri, and BL character becoming friends were hilarious. The Yuri character was watching the female Knights train fantasing about being with them, and the BL character was watching the male knights train, and fantasing the male Knights kissing each other lol, they were arguing whose view was better and it was pretty funny lol.