Dark blood age, problematic sister and otaku are now online.

 https://www.webnovel.com/book/the-rise-of-otaku_17914716405523505

https://www.webnovel.com/book/records-of-barton's-fantastical-events_17914704405523405

https://www.webnovel.com/book/problematic-little-sister-fell-in-love-with-me_17914730306666605

https://www.webnovel.com/book/dark-blood-age_17914735705523805