And if any of Seiji's friends suffered anything catastrophic, he would be able to load.
"I'll be protecting all of you, so you can fight as recklessly as you want…" Of course, Seiji would never say something like that out loud. He would only load if the worst happened.
Hisashi's pain was gone after Seiji used a healing spell on him. Hisashi still felt a great amount of trepidation for his newly-gained ability due to the indescribable painful sensation he felt just now. However, he was unwilling to give it up. He vowed to be more careful the next time that he needed to use it.
Compared to Hisashi's half-baked escape ability, Hoshi's spiritual eagle being able to carry him and fly was obviously a lot better.
However, the spiritual eagle was only capable of carrying Hoshi a small distance. It would be impossible to use it for long-distance flight or even a medium amount of time.