You don't have to ask. I chose that song because it fit so much. He was never a king, but he was living the life pretty hard and fast, the lord of Oshu. He had everything he needed and wanted in his time. Then he met Techna and fell for her and he did so many things to get her attention and show her that he cared for her. They were even briefly engaged. He couldn't fully be the man that he was back in his timeline until he had her to fill that void. He just really wanted her and needs her. Now how she will reply or not I don't know. Even so this is Date's last stand.
nope dust as in what collects on surfaces and dead skin
boosting the powers enhances it and will vary slightly depending on wwhat power it is, e.g. telepathy gets boosted the person will have farther reach and easier time getting into minds, cyclops would emit even stronger blasts, healing factor get get even faster, element control would be more powerful
draining would do the exact opposite, cyclops would barely be able to emit energy, can shut down healing factor, controlling elements would exert alot of energy to move a rock,
both effects are temporary