The shape of the first love is △ (whole volume 1)

Publisher: Ichijinsha
Author: Saya Fuyu
Size: 128mm x 182mm
Number of books: 1
Language: Japanese
Category: Shonen manga, manga
Latest publication date: 2016-11-25

Synopsis:
Minato Noto confessed to his favorite childhood friend, Tsukasa, but was shaken easily if he could only see his brother. Still, he can't give up his first love, and consults with another childhood friend, Toru.
But there was a confession of the same gender, saying, "My first love was Minato -ni "-!?!?
Male → Men → Woman's First Love Triangle appeared in a book !!