Oh Gosh. Where are the other prequels? I've only read 1, 4, and 6. ╥﹏╥

Going to reply on my own comment:
#2: https://myreadingmanga.info/kokokara-dokonimo-ikenai-haikyuu-dj-eng/

#8: https://myreadingmanga.info/sashikizu-gusari-ichibyou-aida-no-rendezvous-haikyuu-dj-eng/

#3: https://myreadingmanga.info/sashikizu-haikyuu-dj-cn/

#5: https://myreadingmanga.info/sashikizu-haikyuu-dj-the-second-battle-deployment-kr/

can u tell me all of them from 1 to 8 in order?

yes, can you? i'd love so too

I'm not really sure about this..but, here goes~ (correct me if I'm wrong. )
#1: http://www.mangago.zone/read-manga/haikyu_dj_hyakumankai_ai_o_sakebe/mi/mi_chapter-1/

#2: https://myreadingmanga.info/kokokara-dokonimo-ikenai-haikyuu-dj-eng/

#3: https://myreadingmanga.info/gusari-the-first-battle-deployment-haikyuu-dj-eng/ (found the english version)

#4: http://www.mangago.zone/read-manga/haikyu_dj_shisseishou_oikawa_tooru_no_hanashi/mi/65811a4a929edc7cb29ad506eeb21052_chapter-1/

#5: https://myreadingmanga.info/sashikizu-haikyuu-dj-eng/ (found the english version)

#6: http://www.mangago.zone/read-manga/haikyu_dj_gunjou_no_shashin/mi/mi_chapter-1/

#7: This dj. Hehe.

#8: http://www.mangago.zone/read-manga/haikyu_dj_ichibyou_aida_no_rendezvous/mf/c001/

thank you!! have a nice day

thank you so much ^^

This dj is actually #9!!! Sorry for that mistake. :(

#7: http://www.mangago.zone/read-manga/ano_machi_ni_sunderu_karera_no_koto_haikyuu_dj/mi/mi_chapter-1/

do you know chap 1 ?

I made a list to make it easy ヾ(☆▽☆)
Check this out: http://www.mangago.zone/home/mangalist/133446/

thanks you so much...
thanks you... i like this story.. I was curious about the sequel

Thank you so much! ヾ(☆▽☆)

Not all heroes wear capes. Thanks a mil!

life saverr, thank youu