PocketVirgin's manga / #promise(3)

Sawamura Eita is kissed by his best friend on his 20th birthday while they are both drunk. Eita believes it all to be just a dream. But was it?

Tsubasa and Kusaka eloped at 17 when their parents refused their relationship. 15 years later at 32 years of age, they are still together and living happily. However, Kusaka suddenly wanted to break up which forced Tsubasa to figure out why and how to fix it.