User blog comment:IamJakuhoRaikoben/Chapter 433 & 434: Ikusatsunagi & Demolition Fist, Review./@comment-66.50.149.62-20150511215751/@comment-96.24.244.24-20150512095630

The only summoning magic that has been stated to work like that is Celestial spirit magic. Angel magic worked different as it takes years off the users life as the summon becomes more powerful. This summon was stated to work through sacrifice.