maybe try this http://www.mangago.zone/read-manga/kimi_wa_natsu_no_naka/ and if you like it try the other works of the author
http://www.mangago.zone/read-manga/i_took_a_trip_to_an_otome_game/
http://www.mangago.zone/read-manga/this_uncle_likes_cute_things/
http://www.mangago.zone/read-manga/hare_no_hi_asada_nemui/
http://www.mangago.zone/read-manga/gods_x_myself_x_brides/
http://www.mangago.zone/read-manga/a_meme_story/
http://www.mangago.zone/read-manga/holy_idol/
http://www.mangago.zone/read-manga/the_reborn_little_girl_won_t_give_up/
http://www.mangago.zone/read-manga/senpai_danjite_koidewa/
http://www.mangago.zone/read-manga/happy_shitty_life/
http://www.mangago.zone/read-manga/a_cat_s_tale/
Short^
http://www.mangago.zone/read-manga/two_guys_in_a_garden/
http://www.mangago.zone/read-manga/hiyama_kentarou_no_ninshin/
http://www.mangago.zone/read-manga/golden_sparkle/
http://www.mangago.zone/read-manga/life_senjou_no_bokura/
http://www.mangago.zone/read-manga/kocchi_muite_waratte/
http://www.mangago.zone/read-manga/hoshi_dake_ga_shitteru/
This one maybe :)
Do u have any manga recommendations (not webtoon) that have around 5~7 chapters? Any genre, i eat everything thankyouuuuu (づ￣ ³￣)づ