a pretty good oneshot , made me laugh a couple times , had some interesting character designs . i will say that 1) the whole " ur the only blood type that can transfuse to any other blood type and its really rare " thing didn't make sense to me because . . . type o negative blood , the universal donor , exists . . . and 2) i feel like there should have been some kind of time skip , or they should have made it more clear that there was a time skip , because i know that he already knows howto fight and be a ninja and stuff , but how did he get that good at using his blood in battle in what i have to assume was like . . . a day or two ?? he was pulling off some pretty complicated stuff with a power he JUST got . unless i was supposed to assume a time skip before the scene of him waking up , but there was really no indication of that

small gripes aside , this was still enjoyable , and i'd reccomend it for an easy / funny read to pass the time :o)