Of course tick with one. Just like reading novels, finish one and then read another.
I wish I had your restraint.
I tend to play 2-5 at a time. However 3 will be in japanese and 2 usually are in english and are 'read a bit of these every night' and take a lot longer to get through, the japanese ones are for study.
here are my current rotation games:
1. 9 Rip Sequel (JP, 20,000ish characters a day) completed 4/9 characters fully. 日本語
2. Ken ga Kimi - replaying this slowly on the switch as it includes the fandisc. Only completed Kei and Enishi. 日本語
3. Diabolik Lovers - On pause, have completed Laito, Ayato, Reiji and half of Subaru - I need to be in a VERY PARTICULAR mood for this game. 日本語
4. Even if Tempest - This my next fandisc to finish, i've only just booted it to prologue. 日本語
5. Itehari - Playing in english 4/5 characters completed! -
English
6. Virche FD - Im emotionally not ready (its been 6 months but its here) -
English
7. Temirana - I am at chapter 4 of common route!
English.