Mushi to Uta
Insects and Songs
虫と歌
In chapter 1, Star Lover, a boy visits his uncle after a long absence to learn — among other unnerving facts — that his uncle apparently now has a daughter. In chapter 3, The Kusaka Siblings, an injured high school pitcher returns home and is confronted with the most unlikely of creatures. In chapter 4, Insects and Songs, an insect expert works to create new species.
(Source: MangaDex)