Title: (COMIC1☆7) [King Revolver (Kikuta Kouji)] Haru Oppai (Suisei no Gargantia)
JPN Title: (COMIC1☆7) [キングリボルバー (菊田高次)] 春おっぱい (翠星のガルガンティア)
Alternative scan of this that I had done at some point and completely forgotten about it.

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Doujinshi DB
Toranoana

You can view it here
E-Hentai