I have a question regarding some of the loot of the summonable bosses. For instance Seiryu - does he have a special drop other than the egg? I've beaten him over 20 times and only gotten the scales, 3 trophies and an egg... Same with the first boss, but instead of the egg there was some pet or something that you summon. Is it worth killing them more for something they rarely drop or they don't have anything special other than what I've seen so far? Also what's the deal with Seiryu's egg? It is not a material, nor a pet or something useable?