I believe one of them belongs to this http://www.mangago.zone/read-manga/monster_master/
Page 4/4 of your album are Ryuusei and Moriya from ZE by Yuki Shimizu. The series revolves around a number of couples and they are only one of them. I believe they're the third couple featured in the series and their story starts at around volume 5. That particular panel belongs to an extra in ZE Kami no Han (an extra volume of compiled extras for the series), chapter 7. If you just want to read that particular scene, you can skip to Kami no Han, but the whole series is worth reading, IMO.
found the second one! ahahahahah actually i was also searching for this one, tho my case, i only knew vaguely the story http://www.mangago.zone/read-manga/haretara_kimi_o_mukae_ni_iku/mi/57bcca2daa45760c3a12fd998e43e1dc_chapter-1/
third: https://myreadingmanga.info/mitsui321-dripping-dew-like-unto-snow-free-dj-eng/
and for the last one, sorry, never seen it before
Omg thanks guys
Hi people I’m finding some manga which I have the pictures from somewhere but I don’t know the names of the manga please tell me the name of the manga if you know (=・ω・=)
http://www.mangago.zone/home/album/49901/