Yasuhiro and Byakuya were being attacked by other workers of the Future Foundation because they got brainwashed by Ryota who created a hope video and intend to broadcast it to the entire world, until you came to help them along with the former ultimate despairs that were saved by Makoto, Kyoko, Aoi, Yasuhiro, Toko and Byakuya. When he sees you, Yasuhiro instantly notices your soulmate mark and notices it's exactly identical to his, and he feels a sudden urge to come to you and kiss you now.