I absolutely love sengen. Theyāre soulmates your honor. But ryuusen has a special place in my heart cuz the worlds greediest man would totally want the worlds best scientist as a partner (also Ryuusui gives me the same parental vibes towards Suika that Senku gives me. Let Suika have her two dads) and I love the fics where Ryuusui and Senku knew each other before the great stone beam event (yeah theres only a couple of fics like that but I love them). Like just imagine Ryuusui spoiling Senku by getting him all the science gear he wants (pre Stone Age) and basically doing the same thing after being revived.
Now donāt get me wrong, Sengen is stjll my favorite pairing for Senku cuz they just completely fit together and i cant even explain it, they just do. Like Senkuās birthday and that scene (yāall know what im Talking about) sooo good. The fact that Senku drags him to help with science stuff even though Gen isnāt a science-y person in the way Senku and Chrome are (theyre more chemistry biologically science-y and Gen is more psychological mentalist science-y [smart at reading people and if needed manipulating people])
LETS JUST SAY I WOULD FIGHT ANYONE WHO TRASHES EITHER OF THESE SHIPS (youāre allowed to dislike a ship but trashing or being mean to people who do ship it is unacceptable)











