Here is a Seven Deadly Sins non-H doujinshi with Meliodas and King. I do like this pairing even though they both have girlfriends. Scanned by me (Adorable Doujinshi Scanlations) https://adorable-scanlations.blogspot.com/
scan #384
Suruga-ya link - https://www.suruga-ya.jp/product/detail/ZHOTI261314?tenpo_cd=
direct download link - https://www.mediafire.com/file/h9kvp6wsg1fp7mo/%2528%25E9%2587%2591%25E9%25AD%259A%25E6%25B3%25A2%25E7%25B4%258B%2529_With_the_setting_I_love_you_so_much_that_I_can%2527t_even_see_your_face%2521.zip/file