First time on /r/
Already image searched and found nothing. Any gotta idea of character or manga?
Sorry anon, it's pretty gay.
[Gujira 4 Gou (Gujira)] Kimeseku ni Maketa Shounen [Eng]
https://myreadingmanga.info/gujira-4-gou-gujira-kimeseku-ni-maketa-shounen-eng/2/