Schizanthus

Schizanthus summary:

Yato, a blind young theologist, is on a journey to train himself, and curing his lack of eyesight is one of his objectives; he ends up in cave due rumors pointing out that there’s a magic lake in it, the water is believed to be the cure of any ill. In that cave resides Garo, a female Kirite, she is a exiled member of a race of winged humanoids who resemble bats; Yato is aided by her on this encounter. From there on they begin to get closer to each other, an interspecies relationship that will put their hearts to ease.