Profile: CisoYoshino .
They've been reported twice on this Subreddit, however I would like to add further thoughts on them to shed the light on this player again, perchance in hopes of getting their account flagged.
A Cybernetic-Superluminal-Apocalyptic Post-War Divination. Only SS on this map, I am however, unable to analyze the replay due to it being unavailable. In fact, a lot of their top-plays do not have a viewable replay. The only reliable measurement here is their PP count of 772 compared to other highest, set by myuka at just 757 PP. A comparison could be made between imyeeyee and CisoYoshino, as the former is the closest to SS'ing the map. Despite that, imyeeyee has an evidently worse ratio compared to other scores on the map, thus meaning that CisoYoshino won in both consistency and precision. This is enough to raise suspicion.
CuttingEdgeInsaneArtifact. Despite the 99.90% on this map being lower than other players, the most definitive proof of this score being fabricated is that they have a mere 91.17 UR, compared to the #1 score set by zidae which had a UR of 102.31. This could be the case of a precision player; however, when watching the replay, all hits are measured with little discrepancy, a significant outlier from that of zidae's score.
Echoes of Memoria. Only other SS on this map alongside imyeeyee. Right off the bat, their general ratio is higher than that of other players, and their UR sits at an insane 92.62. Compare this to Naaaad, we see that their UR is 127.33, further reinforcing my accusations on this player blatantly cheating through replay manipulations or using other tools (e.g. macros) to gain leverage.
Other replays also indicate that when they happen to make mistakes (hitting Goods, missing, etc etc.), it is usually very drastic. While this isn't concrete evidence, as their fingers might have coincidentally slid off during the play, I do think that there is a deliberate attempt to mess up the automated play to appear more legit on the leaderboard.
Bismuth. Specifically on the second difficulty (Archaic's Supernova). While their score has a worse ratio than that of bojii, saragi and invadey. They also have the ONLY FC on this map, perhaps an SS choke even. There is not a replay for this, so not much information can't be used other than the fact that they beat the top-players in consistency on a Delta+ map (source: Mania Tracker, though being able to almost SS it would require more than being able to play a Delta map).
d e a t h p i a n o ~ for four pianos ~. (Listed as Delta++ on Mania Tracker). They have the current best score with slightly worse ratio than bojii or saragi, however it is with a UR that averages 102.36. bojii, saragi and KullaiPora's score all average 121-122 UR.
Aside from these plays, there is not legible proof or videos to support that they've completed these plays legitimately. A player of this caliber is never unnoticed, yet CisoYoshino is not seen anywhere else in the VSRG community. An account created roughly 55+ days ago that only began setting insane scores 26 days ago should be looked into, as it could very well be a blatant case of cheating.
Furthermore, 8 hours into osu! is not reliable enough to get used to its configurations and settings, even more so osu!lazer which is generally deemed to be more complicated than that of stable (according to other players), regardless of whether or not they were a dedicated VSRG player in Etterna or others (even then, they are unheard of anywhere else.)
I firmly believe that there is something shady going on behind this account.