へるしーへありーすけありー

Hatoba Nanakusa, a student in the arts department of a local university, is extremely unhealthy. Through a strange turn of events, she ends up donating her blood to a vampire youkai girl named Yomogi. She points out that her blood tastes as bad as sewer water, and the two decide to work together to get healthy! (Source: Kirara Base, translated)